1. INB pg. 25 CN topic: Chemical Changes
Essential Question: What happens when a Chemical change (reaction) takes place?

2. Lets create our 3 Questions
Q3: What causes Chemical Changes?
Talk to your neighbor and come up with Q’s #1-2 you have about the chemical changes (reactions) of objects

3. A change in a substance that results in a new substance being formed.
Notes Section:
Chemical Change
A change in a substance that results in a new substance being formed.

4. Chemical Change Examples: Burning a match Cooking food Rust forming
Digesting food

5. Physical Change or Chemical Change ? You decide..
Baking a cake
Chemical change
The melting wax on a candle
Physical change
Putting salt on the icy sidewalk
Physical change
Burning the wick of a birthday candle
Chemical change

6. Physical Change or Chemical Change ? You decide..
Sawing a piece of wood
Physical change
Cutting your hair
Physical change
Bleaching your hair
Chemical change
Coloring in a coloring book
Physical change

7. Chemical changes create new substances.
New substances are the result of a chemical reaction.

8. Remember, everything is made of chemicals.
This is the chemical equation of the demonstration by Mr. Dukaj.
Baking soda  + vinegar     →   Carbon Dioxide  +  Water  +  Sodium acetate 
NaHCO3  +  HC2H3O2     →     CO2  +  H2O  +  NaC2H3O2 

9. Summary
With your neighbor, create your own example of a chemical change by copying and filling in the blanks.
SUMMARY: Chemical changes happen when the object does becomes something new. One example is ___________________________. This is a chemical change because _________________________________. Every time I digest my food, I turn it into energy with a chemical reaction!