1. 1/4/12 A/B Day
LEQ: How can we use physical properties
to identify different substances?
1. What does the word “malleable” mean?
2. Which elements do we consider malleable:
metals, nonmetals, or metalloids?
3. Is aluminum malleable?
4. A scientist wants to do an experiment and he
needs something that is a conductor. Should he
pick a metal, a nonmetal, or a metalloid?
5. Explain your answer to number 4!!!

2. AGENDA:
1. Quick Chemistry Review
2. Lecture (Notes, Videos, and Demos)
3. Practice today’s material
4. Summarizer
5. Finish Review Stations

3. Lets Review: WRITE THIS IN YOUR NOTES!
1. MALLEABLE:
2. DUCTILE:
3. CONDUCTOR:
4. INSULATOR:
5. MAGNETIC:

4. SORT IT OUT!!!

5. EOG QUESTION:
What characteristic of aluminum allows it
to be made into aluminum foil?
a. It is dense
b. It is ductile
c. It is magnetic
d. It is malleable

6. Today’s LEQ: How can we use physical
properties to identify different
substances?
By the end of today, you should be able to…
1. Explain the difference between a boiling point
and melting point specific heat, and solubility
2. Define specific heat
3. Define solubility
4. Identify substances with these properties

7. FOCUS VOCABULARY
75. Boiling Point
76. Melting Point
77. Specific Heat

8. Physical Characteristics:

9. COPY THIS IN YOUR NOTES:
BOILING POINT: MELTING POINT:
PHYSICAL
SOLUBILITY: PROPERTIES SPECIFIC HEAT

10. BOILING POINT: The
temperature where a
liquid changes to a gas
-Ex: Water turns to
water vapor at 100 ° C

11. Water is turning
from a liquid to a
gas at 100 ° C

12. DEMO:
Beaker 1: Beaker 2:
100 mL of water 500 mL of water
1. Which one took LONGER to boil?
2. At what TEMPERATURE did
Beaker 1 boil?
3. At what TEMPERATURE did
Beaker 2 boil?

13. HOT Q!!
A beaker with 100 mL of water is
placed on a hot plate and heated.
The water boils at 100°C. At
what temperature would 90
mL of water boil?

14. MELTING POINT: The
temperature where a
solid changes to a liquid
-Ex: Ice turns to water
at 0° C (32 ° F)

15. Water is turning from a
solid to a liquid at 0 ° C
(32 ° F)

16. DEMO:

17. HOT Q:
WHICH ONE DO YOU THINK HAS
THE HIGHEST MELTING POINT?
WAX GOLD
ICE

18. VIDEO:
Boiling, Melting, Freezing, and Sublimation
(Discovery Ed)

19. BOILING POINT AND
MELTING POINT CAN
BE USED TO
IDENTIFY
ELEMENTS AND
COMPOUNDS!

20. MYSTERY Melting Point1) Boiling Point3)
Substance
SUBSTANCE: - Tm - - Tb -
(1 atm)
(K) (K)
BOILS at 630
degrees Hydrogen 13.8 20.3
Oxygen 54.4 90.2
MERCURY!
Nitrogen 63.3 77.3
Ethyl Alcohol 156 351
MYSTERY
Mercury 234 630
SUBSTANCE:
MELTS at 1,359 Water 273.15 373.15
degrees Lead 600 2,023
Aluminum 932 2,740
COPPER! Gold 1,336 2,933
Copper 1,359 1,460
Iron 1,808 3,023

21. SPECIFIC HEAT: amount of
heat needed to raise 1
gram of something by 1
degree
Ex: Low S.H. = easy to heat
High S.H. = hard to heat

22. VIDEO: SPECIFIC HEAT
Specific Heat capacity
(Discovery Ed)

23. Specific Heat Chart: HIGH SPECIFIC HEAT:
Hard to heat up (takes a
lot of heat to get hot!)
LOW SPECIFIC HEAT:
Easy to heat up!
(Doesn’t take a lot of
heat to get hot!)

24. Specific Heat Chart: IN YOUR NOTEBOOK…
LIST these
elements
from EASIEST
to heat to
HARDEST to
heat!

25. LETS PRACTICE!!!
Use the chart provided to answer
questions 1-20 in your notebook.
(Complete sentences NOT required)
Let’s check our answers…

26. SUMMARIZER:
1. What is the difference between a boiling
point and a melting point?
2. What is specific heat?
3. How can we use boiling points, melting
points, and specific heat to identify
different substances?

27. FINISH REVIEW STATIONS!

28. SOLUBILITY: how much of
a substance dissolves in
another substance
-Ex: We can only dissolve
a certain amount of Kool-
Aid mix into a cup of
water.

29. DEMO

30. SOLUBILITY OF
SUBSTANCES
CHANGES WITH
TEMPERATURE!!

31. Reading Solubility Graphs

32. HOT Q: If 10 grams of water boils at
100 ° C, what temperature cause 50
grams of water to boil?