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33 Cards in this Set

  • Front
  • Back
31. Define exothermic change.
31. It is a change that occurs when energy is removed from a substance.
32. What are the four major states of matter?
1. Solid
2. Liquid
3. Gas
4. Plasma
33. What are two forms of naturally occurring plasmas on Earth? (Short Answer)
33. Lightning and fire
28. What does Charles' Law say would happen to a balloon if you put in the freezer?

28. It would shrink because if the temperature decreases, the volume (size) will also decrease.
29. What process changes a liquid to a gas?
29. Vaporization
30. Tell what state ice, water, and steam are in.
30. Ice is a solid.
Water is a liquid.
Steam is a gas.
25. Compare endothermic and exothermic. (Short Answer)
25. During endothermic changes, energy(heat) is added. During exothermic changes, energy (heat) is removed.
26. What happens to the particles when a liquid becomes a gas?
26. The particles break away from each other
27. Describe the particles of a liquid.
27. The particles are close together but are able to slide past each other.
22. What state does matter have a fixed shape and volume?
22. Solid
25. Define condensation.
25. It is the change from a gas to a liquid.
24. What state is it that will take the shape of its container and has a fixed volume?
24. Liquid
19. According to Boyle's Law, what will happen to the volume of a gas inside a chamber sealed by a piston if the pressure is reduced?
19. It will increase.
20. What are three things that happens when a substance loses or absorbs energy?
1. Its temperature can change
2. The speed of the particles can change
3. Its state can change
21. What are crystalline and amorphous examples of?
21. Solids
16. What state will not change shape in different containers?
16. Solids
17. Define vaporization.
17. It is the change of state from a liquid to a gas.
18. According to Charles' Law, if the temperature of a gas increases, what happens to the volume?
18. The volume will increase also.
13. What are particles like in a gas state?
1. They move independently of each other.
2. They move fast enough to break completely away from each other
3. They have empty space between them.
14. Define freezing.
14. It is the change of state from a liquid to a solid.
15. Of the five changes of state, which are exothermic changes?
15. Condensation and freezing
10.Give 3 properties that describe plasmas.
1. Conduct electric current
2. Have magnetic fields
3. Can have a fixed or not fixed shape and volume
11. True or False
Particles of a plasma have broken apart.
11. True
12. Give an example of something that contains plasma.
12. A flourescent light
7. What does Boyle's Law say?
7. It states that for a fixed amount of gas at a constant temperature, volume decreases as pressure increases (or vice versa).
8. What changes of state are endothermic?
1. Melting
2. Vaporization
3. Sublimation
9. Define sublimation.
9. It is the change in state from a solid directly into a gas.
4. What state is 99% of known matter?
4. Plasma
5. What do you add or remove from water to get it to change state?
5. Energy (Heat)
6. List two differences between gases and plasmas. (Short Answer)
1. Plasmas conduct electricity and have magnetic fields. Gases do not.
1. Classify each substance according to its state of matter: ice, apple juice, slice of bread, helium in a balloon, air, water, a textbook, and steam. (Short Answer)
1. SOLIDS: ice, slice of bread, textbook
2. LIQUIDS: apple juice, water
3. GAS: helium in a balloon, steam
2. Describe how the motion and arrangement of particles change as a substance freezes. (Short Answer)
2. MOTION: The motion will begin to slow down as it freezes.
ARRANGEMENT: The particles will start to get closer and closer until they can barely move.
3. Give an example of a substance that undergoes the process of sublimation.
3. Dry Ice