Does the physical state of a substance always change during a chemical change? Give reasons for your answer.
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physical changes never change the identity of the matter, only its size, shape or state. In a physical change, atoms are not rearranged and the matter's physical and chemical properties are unchanged. Chemical changes, on the other hand, rearrange the atoms of matter in new combinations, resulting in matter with new physical and chemical properties.
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No as a insoluble salt can give a insoluble salt depending on the cations and anions mostly cations present
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