Matter

3. The amount of matter in a given volume. Substances that are MORE dense have more matter in the same amount of space.
4. When a substance changes from one state (ex. solid) to another (ex. liquid).
7. anything that takes up space and has mass
8. refers to very tiny portions of matter
11. a change of state from a solid to a liquid.
12. indicates the temperature when a solid turns into a liquid. For WATER: above 0℃.
14. a group of 2 or more atoms held together by chemical bonds that have all the properties of a substance. (ex.H2O)
16. The amount of space a solid, liquid or gas takes up.
17. indicates the temperature when a liquid turns into a gas. For WATER: 100℃.
18. a change of state from a liquid to a solid.
19. The energy of motion. Heated particles have higher kinetic energy than cooled particles.

1. a change of state from a gas to a liquid.
2. the attractive forces between particles in a substance. Strongest in solids, then in liquids, and weakest in gases.
5. has a specific chemical identity (ex. hydrogen, neon, calcium)
6. an INCREASE in volume (how much space something takes up). Often due to heating.
9. Weight is a force and is affected by gravity.
10. indicates the temperature when a liquid turns into a solid. For WATER: below 0℃.
12. The amount of matter in an object. (Typically measured in g or kg.)
13. a DECREASE in volume (how much space something takes up). Often due to cooling.
15. a change of state from a liquid to a gas.