class' what is meaning of physical change
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physical change is a change to a sample of matter in which some properties of the material change, but the identity of the matter does not. Physical changes can further be classified as reversible or irreversible. The melted ice cube may be refrozen, so melting is a reversible physical change.
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A change in matter which does not alter the chemical properties of the matter. For example, if we carve a piece of wood into a baseball bat, it will still burn in a fire and float on water.
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