1. MATTER
Chapter 8 Review

2. Which of the following statements describes the particles of a liquid?
The particles are far apart and fast moving.
The particles are close together but moving past each other.
The particles are far apart and moving slowly.
The particles are closely packed and vibrating in place.

3. Which of the following statements describes what happens as the temperature of a gas in a balloon increases?
The speed of the particles decreases.
The volume of the gas increases, and the speed of the particles increases.
The volume of the gas decreases.
The pressure of the gas decreases.

4. Boiling points and freezing points are examples of
Chemical properties
Physical properties
Energy
Matter

5. During which change of state do atoms become more ordered?
Boiling
Condensation
Melting
Freezing

6. Which of the following changes of state is exothermic?
Evaporation
Melting
Freezing
All of the above

7. The atoms in molecules of matter
Are never attracted to one another
Are constantly moving
Move slowly at higher temperatures
All of the above

8. A sealed, inflated beach ball was placed in a freezer overnight
A sealed, inflated beach ball was placed in a freezer overnight. The next day, the ball was still sealed but had shrunk. Analyze the following hypotheses to determine which is the best.
The pressure inside the ball increased, so the gas particles moved faster.
The gas inside the ball escaped, which caused the ball to shrink.
The temperature of the gas increased, which pushed gas out of the ball.
The temperature of the gas decreased, so the particles of gas moved closer together.

9. Which of the following could describe oxygen at room temperature?
It has a constant volume and a definite shape.
It has a constant volume but takes the shape of its container.
Its particles move fast enough to overcome the attraction between them.
Its particles have a very orderly, 3D arrangement.

10. In a laboratory experiment, Joel observed water as it vaporized, froze, melted, and condensed. Which of the following is a valid conclusion?
He observed four different changes of state.
He observed two different chemical changes.
All of the changes required energy to be absorbed.
All of the changes required energy to be released.

11. A cup filled to the rim with water was left at room temperature overnight. The next morning there was less water in the cup. Which of the following is a reasonable hypothesis for what happened to the water?
The water molecules at the surface lost enough energy to evaporate.
The water molecules at the surface gained enough energy to evaporate.
The water molecules at the surface lost enough energy to condense.
The water molecules at the surface gained enough energy to sublimate.

12. Which substance has the lowest density?
A solid gold nugget
A cup of water
A helium balloon
A plastic cup

13. What would cause water to change from a solid (ice) to a liquid?
Decrease its temperature
Increase its temperature
Decrease its energy
Increase the attractive force between atoms

14. Which state of matter does not have a definite shape or volume?
Solid
Liquid
Gas
None of the above

15. Marquis is studying an unknown substance
Marquis is studying an unknown substance. He has recorded several properties in his notebook. Which of these properties is a physical property?
Boiling point
Flammability
Tendency to tarnish
Tendency to rust

16. The melting point describes the transition from a
Liquid to a solid
Liquid to a gas
Solid to a gas
Solid to a liquid

17. Boyle’s law states that if pressure of a gas is increased, then the _____ decreases by the same amount.
Odor
Pressure
Temperature
Volume

18. Charles’s law states that if temperature of a gas is _____, then the volume increases by the same amount.
Undetermined
Constant
Increased
Decreased

19. True or False: The more energy particles have, the slower they will move.

20. True or False: If energy is removed, an exothermic change will take place.

21. When water goes from a liquid to a solid, energy is _____.
Removed
Added
Destroyed
All of the above