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15 May, 16:30

describe the difference between a physical and a chemical change and explain what happens during a chemical reaction

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  1. 15 May, 19:36
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    There are several differences between a physical and chemical change in matter or substances. A physical change in a substance doesn't change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.
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