1. Physical and Chemical Changes

2. Warm up What would be considered a highly reactive metal? Sodium
Manganese
Radon
Arsenic

3. Video

4. Change
When there is a change in matter there is a change in energy

5. Physical Change
Predict the definition of physical change based on your knowledge of a physical property

6. Correct!!!!!!!!
Physical change – a change in form or appearance of a substance without changing the identity
Can be reversed

7. Examples of Physical changes
Melting, boiling, freezing, evaporating, cutting into smaller pieces

8. Chemical change
Predict the definition of a chemical change based on your knowledge of a chemical property

9. Correct
Chemical change – a change that involves substances combining to form new substances with different properties
Chemical bonds (force that holds atoms together) are rearranged= chemical reaction
Difficult or impossible to reverse

10. Signs of a chemical reaction
Fizzing, bubbling, change in color, heat or light is released
Precipitate forms- solid forms

11. Examples of Chemical changes
Rusting, burning, chemical reactions