what is physical change and chemical change?????
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A physical change in a substance doesn't change what the substance is. In a chemical change where there is achemical reaction, a new substance is formed and energy is either given off or absorbed. For example, if a piece of paper is cut up into small pieces it still is paper
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Explanation:
In a physical change, only the physical properties of the substance are changed.
In a Chemical change, one or more new substances are formed.
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