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OpenStudy (anonymous):
**Please help Physical changes are only caused through burning a material. cannot be detected by the naked eye. do not change the identity of the substance. change the identity of a substance.
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OpenStudy (ipwnbunnies):
Hmm...Not sure what they mean by identity. One sort of physical change would be if you change something's state of matter. Solid to liquid, liquid to gas, etc.
OpenStudy (ipwnbunnies):
It doesn't really change the IDENTITY of the substance, just the state it is in.
OpenStudy (ipwnbunnies):
If you burn something, that will be a chemical change, and you are changing the identity of that substance.
OpenStudy (anonymous):
Do not change the identity. Because whenever you grow taller your identity doesnt change just you height
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