1. Bell Ringer
True/False- In a physical change, a new substance is formed.
Name some physical properties of this room.
What is an example of a chemical property?
When is Chapter 2 Vocabulary due?
If you lose your notebook, what should you do IMMEDIATELY?

2. Turn and Talk With your front/back partner:
List at least 10 changes you could make to a piece of paper.

3. Chapter 2 Section 3 Changes of Matter

4. 2 Types of Changes in Matter:
Physical Change- any change that alters the form or appearance of matter but does not form a new substance
Ex: sand  sand castle
Changes of state- solid, liquid, gas
Change in shape or form- bending, crushing, dissolving, breaking, chopping
Methods of separating mixtures – filtration and distillation

5. Chemical Change (Chemical Reaction)- a change in matter that produces one or more new substances
Ex: Hydrogen peroxide on a cut
Ex: combustion, electrolysis, oxidation, tarnishing, rusting

6. Chemical changes vs. Physical changes – YouTube*
Physical & Chemical Changes – YouTube*

7. Based on what you know now, was the Polyurethane Foam we did the other day, an example of a physical or chemical change?

8. BIG sodium explosion (40g) – YouTube*
Gummy Bear in molten potassium chlorate – YouTube*

9. Sodium Explosion (20g) – YouTube
Huge Chunk of Sodium in Pond – YouTube*
Make an Instant Cold Pack from Sodium Acetate. - YouTube

10. Law of Conservation of Mass
Law of Conservation of Mass – matter is not created or destroyed in any physical or chemical change

12. What is Energy?
Every chemical or physical change in matter includes a change in energy.
Energy is the ability to do work or cause change
Ex:
Bending a paper clip- requires energy
Ice  water (absorbs energy from surroundings)
Candle wax burns- gives off energy

13. Temperature- a measure of the average energy of random motion of particles of matter
Thermal energy- the total energy of all the particles in an object

14. Endothermic change- a change in which energy is absorbed, or taken in
Melting of ice
Baking a cake
Exothermic change- a change in which energy is released, or given off.
A fire burning
Exothermic reaction Potassium Permanganate

15. Text Connection
Name 5 physical changes or chemical changes that occur in your everyday life (text to self) or in the world around you (text to world).