1. Describing Matter

2. Physical Property Physical Property- any characteristic of a material that you can observe. Physical Property- any characteristic of a material that you can observe.

3. Physical Property Ex Ex: Color, Shape, Size, Density, Length and Temperature. Ex: Color, Shape, Size, Density, Length and Temperature.

4. Physical Change Physical Change- the change in the appearance of the object (size, shape or state of matter). Physical Change- the change in the appearance of the object (size, shape or state of matter).

5. Physical Change Ex Breaking a pencil Breaking a pencil Sublimation, Sublimation, Evaporation Evaporation Condensation Condensation Painting a table Painting a table

6. Chemical Property Chemical Property- a characteristic that determines how a substance will change. Chemical Property- a characteristic that determines how a substance will change.

7. Chemical Property Ex Flammable Flammable Combustible Combustible Photosensitive Photosensitive

8. Chemical Change Chemical Change- the changing of one substance into another substance. Chemical Change- the changing of one substance into another substance.

9. Chemical Change Ex Ex: Fireworks, Matches Burning, Egg Rotting Ex: Fireworks, Matches Burning, Egg Rotting Anything burning, rusting or corrosive. Anything burning, rusting or corrosive.

10. Law of Conservation of Mass Law of Conservation of Mass- in a chemical reaction, mass can not be created or destroyed. Law of Conservation of Mass- in a chemical reaction, mass can not be created or destroyed.

11. The mass of a substance before a chemical reaction will equal the mass after the chemical reaction. The mass of a substance before a chemical reaction will equal the mass after the chemical reaction. There will be no change in the mass. There will be no change in the mass.

12. Law of Conservation of Mass Ex: Burning of a log. Ex: Burning of a log. The mass of the ashes, oxygen, smoke and gases equal the mass of the log.