physical vs. chemical change pg 87
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Physical vs. Chemical Change pg 87. Bpop. Physical Change-. 1) Only physical properties change. Chemical properties do not change. 2) Physical changes are generally easy to reverse. 3) No energy is produced by the substance. Chemical Change-. - PowerPoint PPT PresentationTRANSCRIPT
Physical vs. Chemical
Changepg 87
Bpop
Physical Change-
1) Only physical properties change. Chemical properties do not change.
2) Physical changes are generally easy to reverse. 3) No energy is
produced by the substance.
Chemical Change-
1) Both physical and chemical properties are changed.
2) Changes are not reversible without another reaction. 3) Energy is often produced ( fire or heat, for example).
Most chemical changes will have one or more of the following:
HeatBurningColor without you adding itOdor Gas given off
Law of Conservation of Mass
Matter may change form, it can not be created or destroyed
http://www.brainpop.com/science/matterandchemistry/conservationofmass/
Let’s test your
knowledge
Pick an apt clock to work withEvery group gets a whiteboardHave 30 sec to 1 minThen 321 show!
Baking
Chemical Change
Mashing potatoes
Physical Change
Ripping a page
Rotting an apple
Chemical Change
Adding food coloring to water
Physical Change
Chewing food
Physical Change
Digesting food
Chemical Change
An ice cube melting
Physical Change
Mixing salt in water
Physical Change
Two clear liquids are mixed and a white color forms
Chemical Change
Water turning to vapor
Physical Change
Mixing salt and sugar
Physical Change
The reason the Statue of liberty is green
Chemical Change
Respiration
Chemical Change
Photosynthesis
•Chemical Change
•Practice time!
