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