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Alexander Wilson——Works at Microsoft, Lives in Redmond, WA
No new substance has been created but the particles have been rearranged, so this is an example of physical change. If I heat bread and make toast, is this a physical or chemical change? The heat has caused a chemical change in the bread, we cannot restore the bread to the way it was before it was toasted.read more >>+119962023-04-27 15:30:31
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