GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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water evaporating
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paper burning
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a nail rusting
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a silver spoon tarnishing
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Detailed explanation-1: -(i) Boiling, evaporation and condensation are physical changes. Q. Which among the following are physical or chemical changes?
Detailed explanation-2: -Melting, evaporation and condensation are examples of physical change, or change of state, and are distinct from changes that cause new materials to form through a chemical reaction.
Detailed explanation-3: -Evaporation occurs when liquid water changes into a gas. Evaporation is a physical change.
Detailed explanation-4: -Cutting, bending, dissolving, freezing, boiling, and melting are some of the processes that create physical changes.
Detailed explanation-5: -Some common examples of physical changes are: melting, freezing, condensing, breaking, crushing, cutting, and bending.