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What is the main difference between a chemical change and a physical change?

Answer and explanation

Correct answer: One or more new substances are formed in a chemical change.

In a chemical change, the chemical composition of substances changes and one or more new substances are formed. In contrast, a physical change usually changes only the shape, state, or appearance while the chemical identity remains the same. For example, melting ice is a physical change, whereas rusting of iron is a chemical change.

Related tags

ScienceClass 10Chemical ReactionsChemical ChangePhysical Change

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