tpp034
Answered

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A newspaper turns yellow in sunlight. Is this a physical or chemical change?

Sagot :

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It is a chemical change. I always think of a chemical/physical change as if you could  reverse it back as it started off, for example if you stepped on a can you can reverse the can back probably not exactly like it was before but you can still reverse it so this would be a physical change, and if you baked a pizza you could not reverse the dough and everything else back. 
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