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英语翻译A physical change is any change that alters the form or

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英语翻译
A physical change is any change that alters the form or appearance of matter but does not make any substance in the matter into a different substance.
A change in matter that produces one or more new substances is a chemical change ,or a chemical reaction.
英语翻译A physical change is any change that alters the form or
物理变化是物质的状态或是外型产生了变化,但是并没有生成不同的物质.
一个生成了一种或多种新物质的变化是化学变化,或者说是化学反应