When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged.
Chemical Change
When a substance undergoes a chemical change, its molecular composition is changed entirely. Thus, chemical changes involve the formation of new substances
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Answer:
Physical Change
When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged.
Chemical Change
When a substance undergoes a chemical change, its molecular composition is changed entirely. Thus, chemical changes involve the formation of new substances