© Copyright 2014 – all rights reserved www.cpalms.com modified by Nicole Fagnanwww.cpalms.com.

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Presentation transcript:

© Copyright 2014 – all rights reserved modified by Nicole Fagnanwww.cpalms.com

 A physical change alters the form of a substance, but does not change it to another substance. Example: Squeezing the juice from an orange

 When a substance undergoes a chemical change, it is changed into a different substance with different properties. Example: Baking a Cake

1. Color Change 2. Precipitate Forms (the solid formed from a solution during a chemical reaction)

3. Gas Produced 4. Temperature Change

5. Changes in Characteristic Properties (odor, light given off)

 Cutting paper?  Physical

 Toast burning?  Chemical

 Ice melting?  Physical

 Rocket fuel burning?  Chemical

 Sawing wood?  Physical

 Metal rusting?  Chemical

 Disappearing puddle?  Physical

 Candle burning?  Chemical

 Dry ice?  Physical

 Presentation (including images except as cited below) modified from outs/Physical%20or%20chemical%20changes.ppt outs/Physical%20or%20chemical%20changes.ppt  Image on page 10 from  Image on page 14 from pictures pictures  Image on page 15 from missouri-method-of-bedbug-control.html missouri-method-of-bedbug-control.html