2. Physical Change

3. Definition Size Shape State of matter Example: solid ice melts into water Physical change … causes a change in the

4. Characteristics Start and end with the same material The ratio of chemicals stay the same During a physical change… no new materials are made

5. Examples of physical properties and the change that results Freezing point..solid forms Melting point..liquid forms Conductivity..carries heat or electricity Vaporizing..gas is formed Malleability..change shape without shattering

6. Pictures of Physical Changes Melting Point of water is a physical property = 0 Celsius Physical property of water Boiling Point = 100 Celsius

7. Elasticity is a physical property Cutting is a Physical change

8. Review of Physical Properties Can be observed or measured without changing the composition of the matter Example temperature, color, and density

9. Opposite of This Burning Rusting Exploding Bubbles Generated Color Change – (not mixed) Precipitate formed … is a chemical change

10. During a Chemical change..... Produces a different Chemical Hence the name: “Chemical Change”

11. Drain cleaner Fall leaves

12. Review of Chemical Property Can be observed when composition of the matter is changed Examples: Flammability is a chemical property that can be observed when something burns

13. What Kind of Change is This? What happened to the Hydrogen in the bubbles?