1. Changes in Matter
                                  
                                     
                                           
                                     
Section 3

2. Learning Targets
I can identify physical and chemical changes.

3. Physical Changes

4. Physical Changes
Affects one or more physical properties of a substance
Does not change the identity of the substance
Matter undergoes a change in size, shape or phase

5. Physical Changes Is dissolving a physical change? Why? Yes
Diagram: cnx.org
Glass of water: websters-online-dictionary.org

6. Physical Changes Ice melting: learner.org
Chainsaw: aljabrgrade5.wikispaces.com
Crumpled paper: curriculumextras.com

7. Chemical Changes

8. Chemical Changes
Happens when one or more substances are changed into entirely new substances that have different properties
Happens everywhere
Breathing
Fruit ripening
Digesting food

9. Chemical Changes
yeosweeguan.edu.glogster.com

10. How Chemical Changes Can Be Detected
Change in odor
Change in color
Fizzing or foaming
Formation of a precipitate (solid)
Production of sound, heat, or light

11. Chemical Changes Cannot be reversed with physical changes
Some can be reversed with chemical changes

12. Identify the chemical changes.
whenthedinnerbellrings.blogspot.com
Odor, color change, sound?

13. Breaking Down Mixtures and Compounds
What is the difference between the two?
Mixtures
Can be separated by physical means
Test tubes: chesleyfoundation.ca
Centrifuge:

14. Compounds
Broken down through chemical changes
Mercury Oxide

15. Physical or Chemical Change?