1. CHEM 9 STATES OF MATTER

2. anything that has mass & takes up space Matter Mass the amount of matter an object contains

3. States of Matter Solid – –definite shape –definite volume –Particles of a solid are packed close together and the motion seems to be a vibration.

4. States of Matter Liquid - –no definite shape –definite volume –Particles of a liquid bump into each other; they push the particles farther apart and move past them. This causes the "flow" of a liquid. Vapor - –a substance in the gaseous state which is usually a solid or liquid at room temperature (water vapor)

5. States of Matter Gas – –no definite shape –no definite volume –The particles collide with enough force to push the particles so far apart that they escape the attraction of the surrounding particles. –high compressibility

6. Names for phase changes –Melting - Solid changes to Liquid –Freezing - Liquid changes to Solid –Sublimation - Solid changes to Gas –Deposition - Gas changes to Solid –Vaporization - Liquid changes to Gas Evaporation - vaporization that takes place at the surface of a liquid. –Condensation - Gas to Liquid

7. Draw the following graph into your notes: