Give two differences between a physical change and a chemical change.

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Solution

Physical change Chemical change.
When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged. A substance's molecular composition is completely altered when it experiences a chemical transformation. As a result of chemical changes, new compounds are formed.
Physical change is a temporary change. A chemical change is a permanent change.

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Write any two differences between a chemical change and a physical change.

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Physical change	Chemical change.
When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged.	A substance's molecular composition is completely altered when it experiences a chemical transformation. As a result of chemical changes, new compounds are formed.
Physical change is a temporary change.	A chemical change is a permanent change.