SlideShare uma empresa Scribd logo
1 de 17
Revision on form 4 chemistry topics.
                                   Section A

                                  [42 marks]

                    Answer all questions in this section.

         The time suggested to answer this section in 60 minutes.



1. Table 1 shows the elements P, Q, R, S and T and their proton numbers.

   The elements are not the actual symbols of elements in Periodic Table.
   Using these symbols answer the questions below.

         Elements        P          Q          R             S   T
           Proton
                         6          8          12        17      20
          number
                                      Table 1
   a) State the position of element P in the Periodic Table

      ……………………………………………………………………………………
                                    [1
      mark]

   b) Which elements have the same chemical properties?
          ………………………………………………………………………………
      ……                                                [1
      mark]

   c) Atom Q forms an ion by accepting two electrons
       i)   Write the formula of ion Q.

        ……………………………………………………………………………………
                                      [1
       mark]


      ii) Write the electron arrangement of ion Q

         …………………………………………………………………………………
      …                               [1
      mark]


                                        1
d) i) Write the chemical formula of the compound formed when
      atom R reacts with atom S
      …………………………………………………………………………………
   …                                                         [1
   mark]


  ii) State one physical property of compound in c) i)

    ……………………………………………………………………………………
   …                           [1 mark]

e) Explain why the size of atom S is smaller compared to the size of
   atom R

   ………………………………………………………………………………………

   ………………………………………………………………………………………

   ………………………………………………………………………………………
                               [2 marks]


f) Atom P and atom hydrogen react to form a molecule
   [Proton number of hydrogen is 1]
   i) How many hydrogen atoms in one molecule of the compound
      formed?

    ……………………………………………………………………………………………
                                                    [1 mark]


   ii) Draw the electron arrangement of the compound formed
       between atom P and atom hydrogen




                                 2
[2 marks]


2. Diagram 2 shows electrolytic cell as Cell A and Voltaic cell as Cell B



                                   A                                          Zinc
                                             Silver                           Porous pot
                                                                              potpotpot
                 P          Q
   Silver
   plate                               Silver nitrate                         Zinc nitrate
                                       solution                               solution



                          Cell A                                     Cell B
                                             Diagram 2

By referring to cell A:
     a) State anode and cathode for electrodes

              P :……………………..

            Q:……………………..                                             [2
        mark]


     b) State all the ions present in silver nitrate solution

        ……………………………………………………………………………………
                                       [1
        mark]

     c) Write half equation to show reaction at Q
            ………………………………………………………………………………
        ……
                                                  [1 mark]

By referring to cell B:


                                         3
d) i) Which metal plate is negative terminal?
                      ……………………………………………………………………
           ……………
           [1 mark]




     ii)        Explain your answer in d (i)
               ………………………………………………………………………………
           …
                                                                [1 mark]

e) What is the function of porous pot?
    …………………………………………………………………………………
   …
   [1 mark]


f)         State one observation at silver electrode

     ……………………………………………………………………………………
                                 [1 mark]


g) State two differences between cell A and cell B:

     In terms of                   Cell A              Cell B

     Energy changes



     Types of
     electrode


                                                                [2
     marks]




                                      4
3. Table 3 shows the description and observation for two experiments
   involving two solutions to investigate the role of water in showing the
   properties of acid

                                                                                                  Solution B
                                                      Solution A
       Experiment                                                                          Hydrogen chloride in
                                          Hydrogen chloride in water
                                                                                               chloroform

      Experiment I                            Effervescence occurs.

  Reaction with calcium                   A colourless gas is liberated                       No change occur
        carbonate                           turns limewater cloudy

      Experiment II
                                                                                        Ammeter does not show
 Electrolysis using carbon                  Ammeter shows reading
                                                                                              reading
        electrodes

                                                        Table 3


 a) i) Name the colourless gas liberated during reaction with calcium
       carbonate in solution A
                ................................................................................................................
      .......
                                                                                                                 [1 mark]


    ii) Draw the set-up apparatus in experiment I for solution A




                                                              5
[2 marks]


b) i) Which solution shows acidic property?
                   ............................................................................................................
     ...........
                         [1 mark]


  ii) What is the role of water in solution A?

     .......................................................................................................................

                                                                                                                [1 mark]


c) Solution A shows ammeter reading but solution B does not show any
   reading. Explain why.

   .........................................................................................................................

   .........................................................................................................................

   ……………………………………………………………………………………….

                                                                                                               [3 marks]

d) In another experiment, solution B does not show effervescence when
   reacted with magnesium. Explain

   ………………………………………………………………………………………

   [1 mark]

e) What is the effect of dry blue litmus paper on solution B?


   ……………………………………………………………………………………….


                                                             6
[1 mark]




4. Diagram 4 shows preparation of ammonium chloride and lead(II)
   sulphate

                                           PROCESS I
     Hydrochloric +       Ammonium                            Ammonium
        acid               hydroxide                           chloride



       Solution A   +       Solution B     PROCESS II
                                                             Lead(II) sulphate

                                   Diagram 4

Lead(II) sulphate and ammonium chloride are both salts.

   a) What is meant by ‘salt’?



      ……………………………………………………………………………………
      …                            [1 mark]



   b) Classify lead(II) sulphate and ammonium chloride into soluble and
      insoluble salt



                    Soluble salt            Insoluble salt




                                                                      [1 mark]




                                       7
c) i) Name Process II



   ……………………………………………………………………………………...
                                   [1
   mark]



   ii) Name solution A and solution B



          Solution A: ………………………………



          Solution B : ………………………………
                                                                      [2
          marks]



d) Write the chemical equation for the formation of ammonium
   chloride salt in Process I



   ……………………………………………………………………………………...
                                   [1
   mark]



e) Describe briefly a test to determine the presence of chloride ion in
   ammonium chloride solution



   ……………………………………………………………………………………
   …




                                  8
………………………………………………………………………………………



     ………………………………………………………………………………………
                                 [2 marks]




f)   In a different experiment, 12.50 cm3 of 0.5 moldm-3 sulphuric acid
     completely neutralised 25.0 cm3 of sodium hydroxide.



           2NaOH + H2SO4  Na2SO4 + 2H2O



     Calculate the concentration in moldm-3 for sodium hydroxide




                                    9
[3 marks]



                                   Section B
                                  [ 20 marks ]
                  Answer any one question in this section
          The time suggested to answer this section is 30 minutes



5. a) i) What is meant by electrolyte?

                                                                       [2 marks]



     ii) Explain why solid sodium chloride cannot conduct electricity but
         molten sodium chloride can.
                                                                 [3 marks]




     iii) Electrolysis is carried out on a dilute sodium chloride solution using
          carbon electrodes. Oxygen gas produced at anode and
          hydrogen gas produced at cathode. Explain how these products
          are formed.
                                                                        [6 marks]




                                       10
b) An experiment was carried out to construct the Electrochemical
   Series of metals X, magnesium, tin and zinc based on the potential
   differences between two metals.

  Table 5 shows the reading of the potential differences and negative
  electrodes for some pairs of metal.

                       Pairs of metal             Potential      Negative
          Cell
                        electrodes             difference / V   electrodes

           1       Zinc and Magnesium              1.61


           2        Magnesium and X                1.93         Magnesium

           3             Tin and X                 0.73             X

           4            Zinc and X                                 Zinc

                                     Table 5

   Based on Table 5 above, answer the questions below:

   i)          Draw a labelled diagram to show how the experiment is
               carried out in Cell 1

                                                                   [2 marks]

   ii)         State the negative electrode for Cell 1 and give reason.

                                                                    [2 marks]

   iii)        Determine the potential differences in Cell 4

                                                                    [2 marks]

   iv)         Arrange the metals X, magnesium, tin and zinc in descending
               order in the Electrochemical Series.

                                                                    [1 mark]

   v)          Compare the potential difference between Cell 1 and Cell 2
               and give your reason.


                                        11
[2 marks]

6. Tables 6 shows the types of solutions and their basicity.


         Substances        Types of solution            Basicity
              A               Strong acid           Monoprotic acid

              B               Strong acid            Diprotic acid

              C              Strong alkali                 -
                                   Table 6



   a) i) What is meant by strong acid?


                                                                      [2 marks]



      ii) Give one example of each substance A and substance B.
         pH value of substance B is lower than pH value of substance A at
         the same concentration, explain. Include in your answer the
         equations for ionization for both substance A and substance B in
         water.
                                                                      [6 marks]



   b) Acid A reacts with 25.0 cm3 of 0.5 moldm-3 of alkali C to produces
      sodium nitrate and water by neutralization process.



      i) Suggest what is acid A and what is alkali C. Describe briefly how
         you would identify the presence of nitrate ion in the laboratory.

                                                                           [6
                                           marks]

      ii) Describe procedures how to obtain sodium nitrate crystals from
          the sodium nitrate solutions.
                                                              [4 marks]



                                      12
c) A farmer has a problem with his acidic soil in agriculture. Suggest a
      substance used to overcome the problem and give reason.
                                                                   [2 marks]




                           Section C (Paper 3)
                                [ 33 marks]
                    Answer all questions in this section
          The time suggested to answer this section is 60 minutes




                               Diagram 7


7. Diagram 7 shows two electrolytic cells. Electrolytic cell I uses
   hydrochloric acid of concentration 0.001 moldm -3 and
   electrolytic cell II uses hydrochloric acid of concentration 1.0 moldm -3.




                                     13
a) State 2 observations at anode and the responding inferences in
   table 7.1 below.

   Electrolyti
                       Observations at anode         Inferences
     c cell



        I




        II




                                        Table 7.1
                                                            [6 marks]

b) For this experiment, state

             i)     Manipulated variable

                    ………………………………………………………………………

             ii)    Responding variable

                    ………………………………………………………………………

             iii)   Constant variable

                    ………………………………………………………………………
                                           [3 marks]



                                    14
c) In electrolytic cell I, colourless gas is produced at the anode. In
   electrolytic cell II, pale yellow gas is produced at the anode. Explain
   the difference .

   Cell I :

   ………………………………………………………………………………………

   ………………………………………………………………………………………

   Cell II :

   ………………………………………………………………………………………


   ………………………………………………………………………………………
                                [3 marks]

d) Electrolytic cell I is used to carry out the electrolysis of the following
   solutions.

                 1.0 moldm-3 sulphuric acid

                 1.0 moldm-3 nitric acid

                 1.0 moldm-3 potassium iodide

   Classify the solutions by completing the table 7.2 below


    Solutions that produce oxygen at         Solutions that do not produce
      the anode when electrolysed             oxygen at the anode when
                                                      electrolysed




                                    Table 7.2
                                                                     [3 marks]

e) i)   Draw a labelled diagram to show how to collect gas at
   anode and cathode in cell I




                                    15
[3 marks]

      ii)     What is the product formed at the anode in cell II after the
              electrolysis is done for 30 minutes?


            ………………………………………………………………………………….
                                       [3 marks]




8.
            One of the purpose of electroplating is to make the appearance
            of objects become more attractive.

            Student A used iron spoon as cathode and silver metal as anode.
            The spoon was successfully electroplated.
            Student B used iron spoon as anode and silver metal as cathode.
            The spoon was not electroplated.



You are given iron spoon, silver metal and 2 moldm-3 silver nitrate.
Referring to statement above, plan an experiment to investigate the
position of electrode at anode or cathode to be used in electroplating of
iron spoon with silver.

Your planning must include the following items:

      (a)Aim of the experiment
      (b)Statement of the hypothesis
      (c) All the variables
      (d)List of materials and apparatus
      (e) Procedure


                                      16
(f) Tabulation of data




                                               [17 marks]




                         - END OF QUESTIONS-




                              17

Mais conteúdo relacionado

Mais procurados

Chapter 4 simultaneous equations
Chapter 4  simultaneous equationsChapter 4  simultaneous equations
Chapter 4 simultaneous equations
atiqah ayie
 
Mathematics Mid Year Form 4 Paper 1 Mathematics
Mathematics Mid Year Form 4 Paper 1 MathematicsMathematics Mid Year Form 4 Paper 1 Mathematics
Mathematics Mid Year Form 4 Paper 1 Mathematics
sue sha
 
Chemistry paper 3
Chemistry paper 3Chemistry paper 3
Chemistry paper 3
Ina Amalina
 
Structure & essay Questions (chemical bond)
Structure & essay Questions (chemical bond)Structure & essay Questions (chemical bond)
Structure & essay Questions (chemical bond)
Mudzaffar Shah
 
Answering questions technique physics spm paper 3
Answering questions technique physics spm paper 3Answering questions technique physics spm paper 3
Answering questions technique physics spm paper 3
firdaus_mfm
 
Peka form 4 (inertia)
Peka form 4 (inertia)Peka form 4 (inertia)
Peka form 4 (inertia)
Idrul Nafiz
 
91200514 peperiksaan-pertengahan-tahun-biology-tingkatan-4-kertas-2 (1)
91200514 peperiksaan-pertengahan-tahun-biology-tingkatan-4-kertas-2 (1)91200514 peperiksaan-pertengahan-tahun-biology-tingkatan-4-kertas-2 (1)
91200514 peperiksaan-pertengahan-tahun-biology-tingkatan-4-kertas-2 (1)
ISMALIZA ISHAK
 

Mais procurados (20)

Chapter 4 simultaneous equations
Chapter 4  simultaneous equationsChapter 4  simultaneous equations
Chapter 4 simultaneous equations
 
Mathematics Mid Year Form 4 Paper 1 Mathematics
Mathematics Mid Year Form 4 Paper 1 MathematicsMathematics Mid Year Form 4 Paper 1 Mathematics
Mathematics Mid Year Form 4 Paper 1 Mathematics
 
Chemistry Note Form 4 & 5
Chemistry Note Form 4 & 5Chemistry Note Form 4 & 5
Chemistry Note Form 4 & 5
 
Chemistry paper 3
Chemistry paper 3Chemistry paper 3
Chemistry paper 3
 
Structure & essay Questions (chemical bond)
Structure & essay Questions (chemical bond)Structure & essay Questions (chemical bond)
Structure & essay Questions (chemical bond)
 
Spm chemistry formula list form 4
Spm chemistry formula list form 4Spm chemistry formula list form 4
Spm chemistry formula list form 4
 
CHAPTER 6 ACID, BASE AND SALT (1)
CHAPTER 6 ACID, BASE AND SALT (1)CHAPTER 6 ACID, BASE AND SALT (1)
CHAPTER 6 ACID, BASE AND SALT (1)
 
Answering questions technique physics spm paper 3
Answering questions technique physics spm paper 3Answering questions technique physics spm paper 3
Answering questions technique physics spm paper 3
 
SPM PHYSICS-PAPER-3--GUIDE-
SPM PHYSICS-PAPER-3--GUIDE-SPM PHYSICS-PAPER-3--GUIDE-
SPM PHYSICS-PAPER-3--GUIDE-
 
Form 3 Science Chapter 4 Reactivity of Metals
Form 3 Science Chapter 4 Reactivity of MetalsForm 3 Science Chapter 4 Reactivity of Metals
Form 3 Science Chapter 4 Reactivity of Metals
 
Peka form 4 (inertia)
Peka form 4 (inertia)Peka form 4 (inertia)
Peka form 4 (inertia)
 
91200514 peperiksaan-pertengahan-tahun-biology-tingkatan-4-kertas-2 (1)
91200514 peperiksaan-pertengahan-tahun-biology-tingkatan-4-kertas-2 (1)91200514 peperiksaan-pertengahan-tahun-biology-tingkatan-4-kertas-2 (1)
91200514 peperiksaan-pertengahan-tahun-biology-tingkatan-4-kertas-2 (1)
 
MODUL FIZIK 2 PERCUBAAN TINGKATAN 5 2022 (2).pdf
MODUL FIZIK 2 PERCUBAAN TINGKATAN 5 2022 (2).pdfMODUL FIZIK 2 PERCUBAAN TINGKATAN 5 2022 (2).pdf
MODUL FIZIK 2 PERCUBAAN TINGKATAN 5 2022 (2).pdf
 
Paper 1 form 4 mid year (complete)
Paper 1 form 4 mid year (complete)Paper 1 form 4 mid year (complete)
Paper 1 form 4 mid year (complete)
 
Mathematics Form 1-Chapter 6-7 Linear Equalities Linear Inequalities KBSM of ...
Mathematics Form 1-Chapter 6-7 Linear Equalities Linear Inequalities KBSM of ...Mathematics Form 1-Chapter 6-7 Linear Equalities Linear Inequalities KBSM of ...
Mathematics Form 1-Chapter 6-7 Linear Equalities Linear Inequalities KBSM of ...
 
Final Year Examination Form 1 Science Paper
Final Year Examination Form 1 Science Paper Final Year Examination Form 1 Science Paper
Final Year Examination Form 1 Science Paper
 
Form 4 add maths note
Form 4 add maths noteForm 4 add maths note
Form 4 add maths note
 
Notes and Formulae Mathematics SPM
Notes and Formulae Mathematics SPM Notes and Formulae Mathematics SPM
Notes and Formulae Mathematics SPM
 
Homework chapter 2& 3 form 2
Homework chapter 2& 3 form 2Homework chapter 2& 3 form 2
Homework chapter 2& 3 form 2
 
Mathematics-Form 3-Revision © By Kelvin
Mathematics-Form 3-Revision © By KelvinMathematics-Form 3-Revision © By Kelvin
Mathematics-Form 3-Revision © By Kelvin
 

Destaque

Chemistry form 4 topical question 2
Chemistry form 4 topical question 2Chemistry form 4 topical question 2
Chemistry form 4 topical question 2
Mudzaffar Shah
 
Chapter 1 chemistry form 4
Chapter 1 chemistry form 4Chapter 1 chemistry form 4
Chapter 1 chemistry form 4
Stanley Lee
 
chemistry form 4 - Acids n bases (concentration)
chemistry form 4 - Acids n bases (concentration)chemistry form 4 - Acids n bases (concentration)
chemistry form 4 - Acids n bases (concentration)
Maharani Lawak
 
Acid base titration
Acid base titrationAcid base titration
Acid base titration
Student
 
Titration Lab Report
Titration Lab ReportTitration Lab Report
Titration Lab Report
Artur
 
SPM Form 4 Chapter 8 Salt
SPM Form 4 Chapter 8 SaltSPM Form 4 Chapter 8 Salt
SPM Form 4 Chapter 8 Salt
yuenkei
 
Chemistry form 4 topical Question 3
Chemistry form 4 topical Question 3Chemistry form 4 topical Question 3
Chemistry form 4 topical Question 3
Mudzaffar Shah
 
structured-questions-science-form-2
structured-questions-science-form-2structured-questions-science-form-2
structured-questions-science-form-2
farhalina
 

Destaque (20)

Chemistry form 4 topical question 2
Chemistry form 4 topical question 2Chemistry form 4 topical question 2
Chemistry form 4 topical question 2
 
Chemistry afterschool2013 - Question and Anwser
Chemistry afterschool2013 -  Question and AnwserChemistry afterschool2013 -  Question and Anwser
Chemistry afterschool2013 - Question and Anwser
 
chemistry form 4 - Acids n bases
chemistry form 4 - Acids n baseschemistry form 4 - Acids n bases
chemistry form 4 - Acids n bases
 
Chapter 1 chemistry form 4
Chapter 1 chemistry form 4Chapter 1 chemistry form 4
Chapter 1 chemistry form 4
 
Chapter 2 form 4
Chapter 2 form 4Chapter 2 form 4
Chapter 2 form 4
 
Revision acid base with answers
Revision acid base with answersRevision acid base with answers
Revision acid base with answers
 
Chapter 6 Electrochemistry
Chapter 6 ElectrochemistryChapter 6 Electrochemistry
Chapter 6 Electrochemistry
 
Chapter 3 Chemical Formulae and Equations
Chapter 3 Chemical Formulae and EquationsChapter 3 Chemical Formulae and Equations
Chapter 3 Chemical Formulae and Equations
 
chemistry form 4 - Acids n bases (concentration)
chemistry form 4 - Acids n bases (concentration)chemistry form 4 - Acids n bases (concentration)
chemistry form 4 - Acids n bases (concentration)
 
Acid base titration
Acid base titrationAcid base titration
Acid base titration
 
Titration Lab Report
Titration Lab ReportTitration Lab Report
Titration Lab Report
 
Acid base titration
Acid base titrationAcid base titration
Acid base titration
 
SPM Form 4 Chapter 8 Salt
SPM Form 4 Chapter 8 SaltSPM Form 4 Chapter 8 Salt
SPM Form 4 Chapter 8 Salt
 
Acid base titration
Acid base titrationAcid base titration
Acid base titration
 
Chemistry form 4 topical Question 3
Chemistry form 4 topical Question 3Chemistry form 4 topical Question 3
Chemistry form 4 topical Question 3
 
Chapter 8 : SALTS
Chapter 8 : SALTSChapter 8 : SALTS
Chapter 8 : SALTS
 
Organic or Inorganic?
Organic or Inorganic?Organic or Inorganic?
Organic or Inorganic?
 
Carbohydrates, Lipids and Proteins
Carbohydrates, Lipids and ProteinsCarbohydrates, Lipids and Proteins
Carbohydrates, Lipids and Proteins
 
structured-questions-science-form-2
structured-questions-science-form-2structured-questions-science-form-2
structured-questions-science-form-2
 
Chapter 2 The Structure of the Atom
Chapter 2 The Structure of the AtomChapter 2 The Structure of the Atom
Chapter 2 The Structure of the Atom
 

Semelhante a Revision on form 4 chem topics

Structure & essay Questions (periodic table of element)
Structure & essay Questions (periodic table of element)Structure & essay Questions (periodic table of element)
Structure & essay Questions (periodic table of element)
Mudzaffar Shah
 
Bengkel elektrolisis 2
Bengkel elektrolisis 2Bengkel elektrolisis 2
Bengkel elektrolisis 2
Faridah Hamat
 
Standardized 3 f4, 2012 with answers
Standardized 3 f4, 2012   with answersStandardized 3 f4, 2012   with answers
Standardized 3 f4, 2012 with answers
MRSMPC
 
Chemistry perfect-score-module-form-4-set-4
Chemistry perfect-score-module-form-4-set-4Chemistry perfect-score-module-form-4-set-4
Chemistry perfect-score-module-form-4-set-4
Mudzaffar Shah
 
Structure Question (Structure of atom)
Structure Question (Structure of atom)Structure Question (Structure of atom)
Structure Question (Structure of atom)
Mudzaffar Shah
 
Kimia set 1 perfect score
Kimia set 1 perfect scoreKimia set 1 perfect score
Kimia set 1 perfect score
SHUKOR Sudin
 
Seminar form 5- revision on electrochemistry, carbon compound and thermo che...
Seminar  form 5- revision on electrochemistry, carbon compound and thermo che...Seminar  form 5- revision on electrochemistry, carbon compound and thermo che...
Seminar form 5- revision on electrochemistry, carbon compound and thermo che...
MRSMPC
 
Seminar revision on chapter electrchemistry, carbon compound and thermo che...
Seminar  revision on  chapter electrchemistry, carbon compound and thermo che...Seminar  revision on  chapter electrchemistry, carbon compound and thermo che...
Seminar revision on chapter electrchemistry, carbon compound and thermo che...
MRSMPC
 
Chemical formula and equation, mol concept
Chemical formula and equation, mol conceptChemical formula and equation, mol concept
Chemical formula and equation, mol concept
Rossita Radzak
 
Chemistry paper 1
Chemistry paper 1Chemistry paper 1
Chemistry paper 1
Ina Amalina
 
Chemistry perfect score module form 4 set 1
Chemistry perfect score module form 4 set 1Chemistry perfect score module form 4 set 1
Chemistry perfect score module form 4 set 1
sabriong
 
Chemistry perfect-score-module-form-4-set-1
Chemistry perfect-score-module-form-4-set-1Chemistry perfect-score-module-form-4-set-1
Chemistry perfect-score-module-form-4-set-1
Mudzaffar Shah
 

Semelhante a Revision on form 4 chem topics (20)

Short Chem Exercises
Short Chem ExercisesShort Chem Exercises
Short Chem Exercises
 
Cuti2 smkap f5
Cuti2 smkap f5Cuti2 smkap f5
Cuti2 smkap f5
 
Ulangkaji akhir menjelang_spm
Ulangkaji akhir menjelang_spm Ulangkaji akhir menjelang_spm
Ulangkaji akhir menjelang_spm
 
Chapter 6- electrochem qs
Chapter 6- electrochem qsChapter 6- electrochem qs
Chapter 6- electrochem qs
 
Spm2003 p2
Spm2003 p2Spm2003 p2
Spm2003 p2
 
Structure & essay Questions (periodic table of element)
Structure & essay Questions (periodic table of element)Structure & essay Questions (periodic table of element)
Structure & essay Questions (periodic table of element)
 
Bengkel elektrolisis 2
Bengkel elektrolisis 2Bengkel elektrolisis 2
Bengkel elektrolisis 2
 
Standardized 3 f4, 2012 with answers
Standardized 3 f4, 2012   with answersStandardized 3 f4, 2012   with answers
Standardized 3 f4, 2012 with answers
 
Chemistry perfect-score-module-form-4-set-4
Chemistry perfect-score-module-form-4-set-4Chemistry perfect-score-module-form-4-set-4
Chemistry perfect-score-module-form-4-set-4
 
Modul Latihan 1 Kimia Tingkatan 4
Modul Latihan 1 Kimia Tingkatan 4Modul Latihan 1 Kimia Tingkatan 4
Modul Latihan 1 Kimia Tingkatan 4
 
Basic chemistry test 2011 and answers
Basic chemistry test  2011  and answersBasic chemistry test  2011  and answers
Basic chemistry test 2011 and answers
 
Structure Question (Structure of atom)
Structure Question (Structure of atom)Structure Question (Structure of atom)
Structure Question (Structure of atom)
 
Kimia set 1 perfect score
Kimia set 1 perfect scoreKimia set 1 perfect score
Kimia set 1 perfect score
 
Seminar form 5- revision on electrochemistry, carbon compound and thermo che...
Seminar  form 5- revision on electrochemistry, carbon compound and thermo che...Seminar  form 5- revision on electrochemistry, carbon compound and thermo che...
Seminar form 5- revision on electrochemistry, carbon compound and thermo che...
 
Seminar revision on chapter electrchemistry, carbon compound and thermo che...
Seminar  revision on  chapter electrchemistry, carbon compound and thermo che...Seminar  revision on  chapter electrchemistry, carbon compound and thermo che...
Seminar revision on chapter electrchemistry, carbon compound and thermo che...
 
Quiz 1 chem f4
Quiz 1 chem f4Quiz 1 chem f4
Quiz 1 chem f4
 
Chemical formula and equation, mol concept
Chemical formula and equation, mol conceptChemical formula and equation, mol concept
Chemical formula and equation, mol concept
 
Chemistry paper 1
Chemistry paper 1Chemistry paper 1
Chemistry paper 1
 
Chemistry perfect score module form 4 set 1
Chemistry perfect score module form 4 set 1Chemistry perfect score module form 4 set 1
Chemistry perfect score module form 4 set 1
 
Chemistry perfect-score-module-form-4-set-1
Chemistry perfect-score-module-form-4-set-1Chemistry perfect-score-module-form-4-set-1
Chemistry perfect-score-module-form-4-set-1
 

Mais de MRSMPC

Revision on consumer, r te, thermo and carbon compound
Revision on consumer, r te, thermo and carbon compoundRevision on consumer, r te, thermo and carbon compound
Revision on consumer, r te, thermo and carbon compound
MRSMPC
 
Soalan pra trial- chem-2012 with answers
Soalan pra trial- chem-2012 with answersSoalan pra trial- chem-2012 with answers
Soalan pra trial- chem-2012 with answers
MRSMPC
 
Soalan pra trial- chem-2012 with answers
Soalan pra trial- chem-2012 with answersSoalan pra trial- chem-2012 with answers
Soalan pra trial- chem-2012 with answers
MRSMPC
 
Revision for salt, electrochemistry, carbon compounds , thermochemistry
Revision for salt, electrochemistry, carbon compounds , thermochemistryRevision for salt, electrochemistry, carbon compounds , thermochemistry
Revision for salt, electrochemistry, carbon compounds , thermochemistry
MRSMPC
 
Discussion on rate of reaction =for quiz 1 and 2
Discussion on rate of reaction =for quiz 1 and 2Discussion on rate of reaction =for quiz 1 and 2
Discussion on rate of reaction =for quiz 1 and 2
MRSMPC
 
Quiz 2( chemical bond, electrchemistry, acid base)
Quiz 2( chemical bond, electrchemistry, acid base)Quiz 2( chemical bond, electrchemistry, acid base)
Quiz 2( chemical bond, electrchemistry, acid base)
MRSMPC
 
Quiz3with answers latest 1(salt, industry, rate of rex)
Quiz3with answers  latest 1(salt, industry, rate of rex)Quiz3with answers  latest 1(salt, industry, rate of rex)
Quiz3with answers latest 1(salt, industry, rate of rex)
MRSMPC
 
Quiz 2 (chemical bond, electrochemistry, acid base)
Quiz 2 (chemical bond, electrochemistry, acid base)Quiz 2 (chemical bond, electrochemistry, acid base)
Quiz 2 (chemical bond, electrochemistry, acid base)
MRSMPC
 
Remember me chemistry
Remember me chemistryRemember me chemistry
Remember me chemistry
MRSMPC
 

Mais de MRSMPC (20)

Redox part 3= rusting - reactivity series and diff between electrolytic cell...
Redox  part 3= rusting - reactivity series and diff between electrolytic cell...Redox  part 3= rusting - reactivity series and diff between electrolytic cell...
Redox part 3= rusting - reactivity series and diff between electrolytic cell...
 
Quick revision3 draw diagrams ppt
Quick revision3    draw diagrams pptQuick revision3    draw diagrams ppt
Quick revision3 draw diagrams ppt
 
Revision on consumer, r te, thermo and carbon compound
Revision on consumer, r te, thermo and carbon compoundRevision on consumer, r te, thermo and carbon compound
Revision on consumer, r te, thermo and carbon compound
 
Revision on consumer
Revision on consumerRevision on consumer
Revision on consumer
 
Revision on consumer
Revision on consumerRevision on consumer
Revision on consumer
 
Revision on consumer, r te, thermo and carbon compound
Revision on consumer, r te, thermo and carbon compoundRevision on consumer, r te, thermo and carbon compound
Revision on consumer, r te, thermo and carbon compound
 
Soalan pra trial- chem-2012 with answers
Soalan pra trial- chem-2012 with answersSoalan pra trial- chem-2012 with answers
Soalan pra trial- chem-2012 with answers
 
Soalan pra trial- chem-2012 with answers
Soalan pra trial- chem-2012 with answersSoalan pra trial- chem-2012 with answers
Soalan pra trial- chem-2012 with answers
 
Revision for salt, electrochemistry, carbon compounds , thermochemistry
Revision for salt, electrochemistry, carbon compounds , thermochemistryRevision for salt, electrochemistry, carbon compounds , thermochemistry
Revision for salt, electrochemistry, carbon compounds , thermochemistry
 
Soap and detergent, medicine , food additives consumer 2011-edited-2
Soap and detergent, medicine , food additives  consumer 2011-edited-2Soap and detergent, medicine , food additives  consumer 2011-edited-2
Soap and detergent, medicine , food additives consumer 2011-edited-2
 
fats and natural rubber module 3 carbon compounds with answers
fats and natural rubber module 3   carbon compounds with answersfats and natural rubber module 3   carbon compounds with answers
fats and natural rubber module 3 carbon compounds with answers
 
Discussion on rate of reaction =for quiz 1 and 2
Discussion on rate of reaction =for quiz 1 and 2Discussion on rate of reaction =for quiz 1 and 2
Discussion on rate of reaction =for quiz 1 and 2
 
Quiz 2( chemical bond, electrchemistry, acid base)
Quiz 2( chemical bond, electrchemistry, acid base)Quiz 2( chemical bond, electrchemistry, acid base)
Quiz 2( chemical bond, electrchemistry, acid base)
 
Quiz 55 ( carbon compound and consumer)
Quiz 55 ( carbon compound and consumer)Quiz 55 ( carbon compound and consumer)
Quiz 55 ( carbon compound and consumer)
 
Quiz 4[redox n thermo]
Quiz 4[redox n thermo]Quiz 4[redox n thermo]
Quiz 4[redox n thermo]
 
Quiz3with answers latest 1(salt, industry, rate of rex)
Quiz3with answers  latest 1(salt, industry, rate of rex)Quiz3with answers  latest 1(salt, industry, rate of rex)
Quiz3with answers latest 1(salt, industry, rate of rex)
 
Quiz 2 (chemical bond, electrochemistry, acid base)
Quiz 2 (chemical bond, electrochemistry, acid base)Quiz 2 (chemical bond, electrochemistry, acid base)
Quiz 2 (chemical bond, electrochemistry, acid base)
 
Remember me chemistry
Remember me chemistryRemember me chemistry
Remember me chemistry
 
chemistry skill part 3 - popular Calculations
chemistry skill part 3 - popular Calculationschemistry skill part 3 - popular Calculations
chemistry skill part 3 - popular Calculations
 
Quiz3 with answers latest
Quiz3 with answers  latest Quiz3 with answers  latest
Quiz3 with answers latest
 

Último

Finding Java's Hidden Performance Traps @ DevoxxUK 2024
Finding Java's Hidden Performance Traps @ DevoxxUK 2024Finding Java's Hidden Performance Traps @ DevoxxUK 2024
Finding Java's Hidden Performance Traps @ DevoxxUK 2024
Victor Rentea
 
Why Teams call analytics are critical to your entire business
Why Teams call analytics are critical to your entire businessWhy Teams call analytics are critical to your entire business
Why Teams call analytics are critical to your entire business
panagenda
 
Architecting Cloud Native Applications
Architecting Cloud Native ApplicationsArchitecting Cloud Native Applications
Architecting Cloud Native Applications
WSO2
 
+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUDHA...
+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUDHA...+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUDHA...
+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUDHA...
?#DUbAI#??##{{(☎️+971_581248768%)**%*]'#abortion pills for sale in dubai@
 

Último (20)

Finding Java's Hidden Performance Traps @ DevoxxUK 2024
Finding Java's Hidden Performance Traps @ DevoxxUK 2024Finding Java's Hidden Performance Traps @ DevoxxUK 2024
Finding Java's Hidden Performance Traps @ DevoxxUK 2024
 
AI in Action: Real World Use Cases by Anitaraj
AI in Action: Real World Use Cases by AnitarajAI in Action: Real World Use Cases by Anitaraj
AI in Action: Real World Use Cases by Anitaraj
 
TrustArc Webinar - Unlock the Power of AI-Driven Data Discovery
TrustArc Webinar - Unlock the Power of AI-Driven Data DiscoveryTrustArc Webinar - Unlock the Power of AI-Driven Data Discovery
TrustArc Webinar - Unlock the Power of AI-Driven Data Discovery
 
[BuildWithAI] Introduction to Gemini.pdf
[BuildWithAI] Introduction to Gemini.pdf[BuildWithAI] Introduction to Gemini.pdf
[BuildWithAI] Introduction to Gemini.pdf
 
MINDCTI Revenue Release Quarter One 2024
MINDCTI Revenue Release Quarter One 2024MINDCTI Revenue Release Quarter One 2024
MINDCTI Revenue Release Quarter One 2024
 
Why Teams call analytics are critical to your entire business
Why Teams call analytics are critical to your entire businessWhy Teams call analytics are critical to your entire business
Why Teams call analytics are critical to your entire business
 
Elevate Developer Efficiency & build GenAI Application with Amazon Q​
Elevate Developer Efficiency & build GenAI Application with Amazon Q​Elevate Developer Efficiency & build GenAI Application with Amazon Q​
Elevate Developer Efficiency & build GenAI Application with Amazon Q​
 
Six Myths about Ontologies: The Basics of Formal Ontology
Six Myths about Ontologies: The Basics of Formal OntologySix Myths about Ontologies: The Basics of Formal Ontology
Six Myths about Ontologies: The Basics of Formal Ontology
 
Strategize a Smooth Tenant-to-tenant Migration and Copilot Takeoff
Strategize a Smooth Tenant-to-tenant Migration and Copilot TakeoffStrategize a Smooth Tenant-to-tenant Migration and Copilot Takeoff
Strategize a Smooth Tenant-to-tenant Migration and Copilot Takeoff
 
Architecting Cloud Native Applications
Architecting Cloud Native ApplicationsArchitecting Cloud Native Applications
Architecting Cloud Native Applications
 
DEV meet-up UiPath Document Understanding May 7 2024 Amsterdam
DEV meet-up UiPath Document Understanding May 7 2024 AmsterdamDEV meet-up UiPath Document Understanding May 7 2024 Amsterdam
DEV meet-up UiPath Document Understanding May 7 2024 Amsterdam
 
API Governance and Monetization - The evolution of API governance
API Governance and Monetization -  The evolution of API governanceAPI Governance and Monetization -  The evolution of API governance
API Governance and Monetization - The evolution of API governance
 
CNIC Information System with Pakdata Cf In Pakistan
CNIC Information System with Pakdata Cf In PakistanCNIC Information System with Pakdata Cf In Pakistan
CNIC Information System with Pakdata Cf In Pakistan
 
Repurposing LNG terminals for Hydrogen Ammonia: Feasibility and Cost Saving
Repurposing LNG terminals for Hydrogen Ammonia: Feasibility and Cost SavingRepurposing LNG terminals for Hydrogen Ammonia: Feasibility and Cost Saving
Repurposing LNG terminals for Hydrogen Ammonia: Feasibility and Cost Saving
 
Stronger Together: Developing an Organizational Strategy for Accessible Desig...
Stronger Together: Developing an Organizational Strategy for Accessible Desig...Stronger Together: Developing an Organizational Strategy for Accessible Desig...
Stronger Together: Developing an Organizational Strategy for Accessible Desig...
 
AI+A11Y 11MAY2024 HYDERBAD GAAD 2024 - HelloA11Y (11 May 2024)
AI+A11Y 11MAY2024 HYDERBAD GAAD 2024 - HelloA11Y (11 May 2024)AI+A11Y 11MAY2024 HYDERBAD GAAD 2024 - HelloA11Y (11 May 2024)
AI+A11Y 11MAY2024 HYDERBAD GAAD 2024 - HelloA11Y (11 May 2024)
 
+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUDHA...
+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUDHA...+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUDHA...
+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUDHA...
 
How to Troubleshoot Apps for the Modern Connected Worker
How to Troubleshoot Apps for the Modern Connected WorkerHow to Troubleshoot Apps for the Modern Connected Worker
How to Troubleshoot Apps for the Modern Connected Worker
 
Exploring Multimodal Embeddings with Milvus
Exploring Multimodal Embeddings with MilvusExploring Multimodal Embeddings with Milvus
Exploring Multimodal Embeddings with Milvus
 
Web Form Automation for Bonterra Impact Management (fka Social Solutions Apri...
Web Form Automation for Bonterra Impact Management (fka Social Solutions Apri...Web Form Automation for Bonterra Impact Management (fka Social Solutions Apri...
Web Form Automation for Bonterra Impact Management (fka Social Solutions Apri...
 

Revision on form 4 chem topics

  • 1. Revision on form 4 chemistry topics. Section A [42 marks] Answer all questions in this section. The time suggested to answer this section in 60 minutes. 1. Table 1 shows the elements P, Q, R, S and T and their proton numbers. The elements are not the actual symbols of elements in Periodic Table. Using these symbols answer the questions below. Elements P Q R S T Proton 6 8 12 17 20 number Table 1 a) State the position of element P in the Periodic Table …………………………………………………………………………………… [1 mark] b) Which elements have the same chemical properties? ……………………………………………………………………………… …… [1 mark] c) Atom Q forms an ion by accepting two electrons i) Write the formula of ion Q. …………………………………………………………………………………… [1 mark] ii) Write the electron arrangement of ion Q ………………………………………………………………………………… … [1 mark] 1
  • 2. d) i) Write the chemical formula of the compound formed when atom R reacts with atom S ………………………………………………………………………………… … [1 mark] ii) State one physical property of compound in c) i) …………………………………………………………………………………… … [1 mark] e) Explain why the size of atom S is smaller compared to the size of atom R ……………………………………………………………………………………… ……………………………………………………………………………………… ……………………………………………………………………………………… [2 marks] f) Atom P and atom hydrogen react to form a molecule [Proton number of hydrogen is 1] i) How many hydrogen atoms in one molecule of the compound formed? …………………………………………………………………………………………… [1 mark] ii) Draw the electron arrangement of the compound formed between atom P and atom hydrogen 2
  • 3. [2 marks] 2. Diagram 2 shows electrolytic cell as Cell A and Voltaic cell as Cell B A Zinc Silver Porous pot potpotpot P Q Silver plate Silver nitrate Zinc nitrate solution solution Cell A Cell B Diagram 2 By referring to cell A: a) State anode and cathode for electrodes P :…………………….. Q:…………………….. [2 mark] b) State all the ions present in silver nitrate solution …………………………………………………………………………………… [1 mark] c) Write half equation to show reaction at Q ……………………………………………………………………………… …… [1 mark] By referring to cell B: 3
  • 4. d) i) Which metal plate is negative terminal? …………………………………………………………………… …………… [1 mark] ii) Explain your answer in d (i) ……………………………………………………………………………… … [1 mark] e) What is the function of porous pot? ………………………………………………………………………………… … [1 mark] f) State one observation at silver electrode …………………………………………………………………………………… [1 mark] g) State two differences between cell A and cell B: In terms of Cell A Cell B Energy changes Types of electrode [2 marks] 4
  • 5. 3. Table 3 shows the description and observation for two experiments involving two solutions to investigate the role of water in showing the properties of acid Solution B Solution A Experiment Hydrogen chloride in Hydrogen chloride in water chloroform Experiment I Effervescence occurs. Reaction with calcium A colourless gas is liberated No change occur carbonate turns limewater cloudy Experiment II Ammeter does not show Electrolysis using carbon Ammeter shows reading reading electrodes Table 3 a) i) Name the colourless gas liberated during reaction with calcium carbonate in solution A ................................................................................................................ ....... [1 mark] ii) Draw the set-up apparatus in experiment I for solution A 5
  • 6. [2 marks] b) i) Which solution shows acidic property? ............................................................................................................ ........... [1 mark] ii) What is the role of water in solution A? ....................................................................................................................... [1 mark] c) Solution A shows ammeter reading but solution B does not show any reading. Explain why. ......................................................................................................................... ......................................................................................................................... ………………………………………………………………………………………. [3 marks] d) In another experiment, solution B does not show effervescence when reacted with magnesium. Explain ……………………………………………………………………………………… [1 mark] e) What is the effect of dry blue litmus paper on solution B? ………………………………………………………………………………………. 6
  • 7. [1 mark] 4. Diagram 4 shows preparation of ammonium chloride and lead(II) sulphate PROCESS I Hydrochloric + Ammonium Ammonium acid hydroxide chloride Solution A + Solution B PROCESS II Lead(II) sulphate Diagram 4 Lead(II) sulphate and ammonium chloride are both salts. a) What is meant by ‘salt’? …………………………………………………………………………………… … [1 mark] b) Classify lead(II) sulphate and ammonium chloride into soluble and insoluble salt Soluble salt Insoluble salt [1 mark] 7
  • 8. c) i) Name Process II ……………………………………………………………………………………... [1 mark] ii) Name solution A and solution B Solution A: ……………………………… Solution B : ……………………………… [2 marks] d) Write the chemical equation for the formation of ammonium chloride salt in Process I ……………………………………………………………………………………... [1 mark] e) Describe briefly a test to determine the presence of chloride ion in ammonium chloride solution …………………………………………………………………………………… … 8
  • 9. ……………………………………………………………………………………… ……………………………………………………………………………………… [2 marks] f) In a different experiment, 12.50 cm3 of 0.5 moldm-3 sulphuric acid completely neutralised 25.0 cm3 of sodium hydroxide. 2NaOH + H2SO4  Na2SO4 + 2H2O Calculate the concentration in moldm-3 for sodium hydroxide 9
  • 10. [3 marks] Section B [ 20 marks ] Answer any one question in this section The time suggested to answer this section is 30 minutes 5. a) i) What is meant by electrolyte? [2 marks] ii) Explain why solid sodium chloride cannot conduct electricity but molten sodium chloride can. [3 marks] iii) Electrolysis is carried out on a dilute sodium chloride solution using carbon electrodes. Oxygen gas produced at anode and hydrogen gas produced at cathode. Explain how these products are formed. [6 marks] 10
  • 11. b) An experiment was carried out to construct the Electrochemical Series of metals X, magnesium, tin and zinc based on the potential differences between two metals. Table 5 shows the reading of the potential differences and negative electrodes for some pairs of metal. Pairs of metal Potential Negative Cell electrodes difference / V electrodes 1 Zinc and Magnesium 1.61 2 Magnesium and X 1.93 Magnesium 3 Tin and X 0.73 X 4 Zinc and X Zinc Table 5 Based on Table 5 above, answer the questions below: i) Draw a labelled diagram to show how the experiment is carried out in Cell 1 [2 marks] ii) State the negative electrode for Cell 1 and give reason. [2 marks] iii) Determine the potential differences in Cell 4 [2 marks] iv) Arrange the metals X, magnesium, tin and zinc in descending order in the Electrochemical Series. [1 mark] v) Compare the potential difference between Cell 1 and Cell 2 and give your reason. 11
  • 12. [2 marks] 6. Tables 6 shows the types of solutions and their basicity. Substances Types of solution Basicity A Strong acid Monoprotic acid B Strong acid Diprotic acid C Strong alkali - Table 6 a) i) What is meant by strong acid? [2 marks] ii) Give one example of each substance A and substance B. pH value of substance B is lower than pH value of substance A at the same concentration, explain. Include in your answer the equations for ionization for both substance A and substance B in water. [6 marks] b) Acid A reacts with 25.0 cm3 of 0.5 moldm-3 of alkali C to produces sodium nitrate and water by neutralization process. i) Suggest what is acid A and what is alkali C. Describe briefly how you would identify the presence of nitrate ion in the laboratory. [6 marks] ii) Describe procedures how to obtain sodium nitrate crystals from the sodium nitrate solutions. [4 marks] 12
  • 13. c) A farmer has a problem with his acidic soil in agriculture. Suggest a substance used to overcome the problem and give reason. [2 marks] Section C (Paper 3) [ 33 marks] Answer all questions in this section The time suggested to answer this section is 60 minutes Diagram 7 7. Diagram 7 shows two electrolytic cells. Electrolytic cell I uses hydrochloric acid of concentration 0.001 moldm -3 and electrolytic cell II uses hydrochloric acid of concentration 1.0 moldm -3. 13
  • 14. a) State 2 observations at anode and the responding inferences in table 7.1 below. Electrolyti Observations at anode Inferences c cell I II Table 7.1 [6 marks] b) For this experiment, state i) Manipulated variable ……………………………………………………………………… ii) Responding variable ……………………………………………………………………… iii) Constant variable ……………………………………………………………………… [3 marks] 14
  • 15. c) In electrolytic cell I, colourless gas is produced at the anode. In electrolytic cell II, pale yellow gas is produced at the anode. Explain the difference . Cell I : ……………………………………………………………………………………… ……………………………………………………………………………………… Cell II : ……………………………………………………………………………………… ……………………………………………………………………………………… [3 marks] d) Electrolytic cell I is used to carry out the electrolysis of the following solutions. 1.0 moldm-3 sulphuric acid 1.0 moldm-3 nitric acid 1.0 moldm-3 potassium iodide Classify the solutions by completing the table 7.2 below Solutions that produce oxygen at Solutions that do not produce the anode when electrolysed oxygen at the anode when electrolysed Table 7.2 [3 marks] e) i) Draw a labelled diagram to show how to collect gas at anode and cathode in cell I 15
  • 16. [3 marks] ii) What is the product formed at the anode in cell II after the electrolysis is done for 30 minutes? …………………………………………………………………………………. [3 marks] 8. One of the purpose of electroplating is to make the appearance of objects become more attractive. Student A used iron spoon as cathode and silver metal as anode. The spoon was successfully electroplated. Student B used iron spoon as anode and silver metal as cathode. The spoon was not electroplated. You are given iron spoon, silver metal and 2 moldm-3 silver nitrate. Referring to statement above, plan an experiment to investigate the position of electrode at anode or cathode to be used in electroplating of iron spoon with silver. Your planning must include the following items: (a)Aim of the experiment (b)Statement of the hypothesis (c) All the variables (d)List of materials and apparatus (e) Procedure 16
  • 17. (f) Tabulation of data [17 marks] - END OF QUESTIONS- 17