Question

1. Write two differences between a physical change and a chemical change.​

Answer 1

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⇒ chemical change

• A chemical change is a permanent change

• A few examples of chemical change are digestion of food, burning of coal, rusting, etc

⇒ physical change

• A Physical change affects only physical properties i.e. shape, size, etc

• Some examples of physical change are freezing of water, melting of wax, boiling of water, etc.