1. Vocabulary Set #1

2. Condensation the process of changing from a gas to a liquid.

3. Density mass of an object divided by its volume. How much matter is in a given area.

4. Freezing change of matter from a liquid sate to a solid state.

5. Gas matter that does not have a definite shape or volume; has particles that move at high speeds in all directions.

6. Heat movement of thermal energy from a substance at a higher temperature to a substance at a lower temperature.

7. Liquid matter with a definite volume but no definite shape that can flow from one place to another.

8. Matter anything that takes up space and has mass.

9. Melting change of matter from a solid state to a liquid state.

10. Pressure force exerted on a surface divided by the total area over which the force is exerted.

11. Solid matter with a definite shape and volume; has tightly packed particles that move mainly by vibrating.

12. Viscosity a liquid's resistance to flow.

13. Vaporization the process by which a liquid changes into a gas.