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Chemical Changes
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Clues to Chemical Changes
Could make a sound Could give off light Change in odor Change in color Could Fizz or foam the object or liquid could give off heat
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Signs of a Chemical Change
Color Change Changes in Characteristic Properties (odor, light given off)
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Signs of a Chemical Change
Gas Production Temperature Change
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How do I know if a Physical Change occurred or a Chemical Change occurred?
The most important question to ask is did the composition/identity of the substance change?
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