1. Physical and Chemical Changes
I can identify physical and chemical changes and examine the effects on matter.

2. Changes to matter… Physical Changes Chemical Changes
Do NOT change the chemical make up of the substance
Easily reversed because no change to the chemistry of the substance has been made
Chemical Changes
Change the chemical identity of the substance
Cannot be reversed because you have an entirely new substance

3. Physical changes Mixtures can be separated by physical means
Evaporation
Chromatography
By hand
Centrifuge
Magnetism

4. Physical Changes
Shape or size
Dissolving
State of matter
Mixing

5. Dissolving The particles aren’t chemical joined, it’s
like a party in the
glass.

6. Chemical Changes
Make an entirely new substance with different properties
5 signs of a chemical change:
Fizzing/foaming
Light/heat given off
Color change
Smell change
Sound given off

7. Chemical Changes Energy is either absorbed or given off
Exothermic- Energy given off
Endothermic- Energy absorbed