what is physical change
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Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.
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A reaction in which an object changes just for a short time and then again goes back to its original state is known as Physical change.
Ex:When ice is melted, it turns into water but when water becomes hard or gets freezed it again changes back to Ice.
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