1. States of Matter
/ gas
Solid
Solids – shape and volume don’t change (definite or fixed)
Liquids – volume doesn’t change but takes shape of container
Gas – takes volume and shape of container; compressible (can press particles closer together)

2. Mixtures vs Pure Substances
Mixed together
Substances retain their properties
Heterogeneous (different composition – can see the different components)
Homogeneous (same throughout) called solutions; dissolving
Chemically combined
Elements (on periodic table)
ex. Li
Compounds (more than one element in same formula) ex. NaHCO3

3. Examples Salt water CH3OH Dirt Copper (Cu) Salad NaC2H3O2
Mixture (homo)
Pure (compound)
Mixture (hetero)
Pure (element)

4. Graph Temperature Boiling Point? 100 Freezing Point? State at 105o C?
State at 105o C?
Gas

5. Properties Physical - can be observed or measured Examples: Odor Color
Mass
Boiling Point
Chemical
- ability to undergo a chemical reaction
- creates a new substance (new identity)
Examples:
Ability to rot
Ability to burn
Corrosive

6. Changes Physical - change in appearance - change in state of matter
Examples:
Melting
Crushing
Dissolving
Chemical
- creates a new substance (with new properties)
- chemical reaction
Examples:
Burning
Rusting

7. Changes
Tarnishing
Condensing steam
Making coffee
Chemical
Physical