3. Nature of Science Metric Measurement Classifying Matter Atomic Structure Chemical Bonding Chemical Reactions $ 200 $ 200 $200 $200 $ 200 $ 200 $400 $400 $ 400 $400 $ 400 $400 $600 $ 600 $600 $ 600 $ 600 $ 600 $800 $ 800 $800 $ 800 $ 800 $ 800 $ 1000 $1000 $ 1000 $ 1000 $ 1000 $ 1000

5. Final Jeopardy answer How many dots would be in Phosphorous ‘s dot diagram?

6. $200 A hypothesis What is an educated guess or testable prediction called?

8. $600 Independent variable What is the name of the one variable that is changed and tested in an experiment?

9. $800 Precision What is the term for how close repeated measurements are to each other when conducting trials?

10. $1000 Time on the timer is what was measured. What was the dependent variable when you tested either weight or ramp height of your car?

15. $1000 65.91 kg Solve the following problem – convert 145 pounds into kg (1 kg = 2.2 lbs)

16. $200 Heterogeneous What is an unevenly mixed mixture called?

17. $400 Compound Under what category of matter is salt classified?

18. $600 Physical Change – it is only a phase change. Is gasoline evaporating a physical or chemical change? How can you tell?

19. $800 Un-pure mixtures can be physically separated while substances such as elements and compounds cannot. What is the difference between un-pure mixtures and pure substances?

20. $1000 Colloids are NOT clear and are considered heterogeneous while solutions are clear and are considered homogeneous mixtures. What is the difference between a colloid and a solution?

21. $200 The nucleus. What is the center of an atom called?

22. $400 The neutron Which subatomic particle has the same mass as a proton?

23. $600 Protons plus neutrons added together. How is the mass number of an element determined?

24. $800 Atomic number is number of PROTONS. Mass number is the number of PROTONS + NEUTRONS What is the difference between an element’s ATOMIC NUMBER and MASS NUMBER?

25. $1000 11 Protons, 11 Electrons and 12 Neutrons (23-11 for neutrons.) If sodium (Na) has a atomic number of 11 and a mass number of 23, calculate the its number of protons, electrons and neutrons.

26. $200 They have a FULL outer electron level. Why are the noble gases (group 18) the most chemically stable elements?

27. $400 The outer level electrons What do the dots represent in an electron dot diagram?

28. $600 +3 What will be the charge of an atom that loses 3 electrons?

29. $800 MgCl 2 If magnesium has a charge of +2 and chlorine has a charge of -1, what will be the ionic formula for this compound?

30. $1000 Ions are charged particles while isotopes are elements that can have masses of different sizes (because of a difference in neutrons.) What is the difference between an ION and an ISOTOPE?

31. $200 Exothermic What kind of reaction is present if heat is given off?

32. $400 Decomposition What kind of reaction is shown? 2H 2 O 2 ----- 2H 2 O + O 2

33. $600 A single replacement reaction starts with an element and compound while a double replacement reaction starts with two compounds. How can you tell the difference between a single versus a double replacement reaction?

34. $800 1. Particle size 2. Concentration 3.Temperature 4. Catalyst List at least three of the four factors that can change the rate or speed of a chemical reaction.

35. 1000 What would be the coefficients for this reaction? __B + __F 2 ----- __BF 3 2 B + 3 F 2 ------ 2 BF 3

36. The Jeopardy champion!