1. 2. Density ________ as temperature increases.
Week What is the density of a stack of coins that takes up 40 mL of space and when placed on a balance, it reads 60 g?
1.5 g/mL C. 2.0 g/mL
0.67 g/mL D. 1.0 g/mL
2. Density ________ as temperature increases.
Increases
Decreases
Stays the same
Is less noticeable

2. 3. Iron has a density of about 8 g/cm3
3. Iron has a density of about 8 g/cm3. What is the mass of 2 cm3 of iron?
4 g C. 16 g
8 g D. 24 g
4. The density of water is g/mL at 25 ͦC and g/mL at 0 ͦC. What can you infer about water from these two measurements?
Water is more dense when it is solid.
Water is less dense when it is liquid.
Ice will float on liquid water.
Ice will sink in liquid water.

3. 5. The density of four unknown liquids is given in the table
5. The density of four unknown liquids is given in the table. A student places a small, solid cube in each of the liquids. The cube has a mass of 10 grams and a volume of 8 cubic centimeters. In which of the liquids will the cube float?
Liquid
Density
(g/cm3) 1
1.1 2
1.2 3
1.3 4
1.4
in Liquid 4 only
in Liquid 3 and Liquid 4 only
in Liquid 2, Liquid 3, and Liquid 4 only
in Liquid 1, Liquid 2, Liquid 3, and Liquid 4
6. An aluminum bar was found to have a mass of 27 g. Using water displacement, the volume was measured to be 10 mL. What is the density of the aluminum?
270 g/mL C. 2.7 g/mL
270 g D. 2.7 g

4. 7. In which phase change do particles move farther apart?
Condensation C. Melting
Freezing D. Deposition
8. Atoms in the ______ phase have the most distance between them. Atoms in the _____ phase have less distance between them, but are still mobile.
Solid, gaseous
Solid, liquid
Gaseous, solid
Gaseous, liquid

5. 9. The diagram shows matter changing states
9. The diagram shows matter changing states. How did these particles move as matter changed state?
Particles lost energy and moved more slowly
Particles lost energy and moved more quickly
Particles gained energy and moved more slowly
Particles gained energy and moved more quickly
10. Which of the following correctly places the phases of water from MOST dense to the LEAST dense?
Solid, liquid, gas, plasma
Solid, gas, plasma, liquid
Liquid, solid, gas, plasma
Plasma, solid, liquid, gas