Physical changes simply affect a substance's appearance, not its chemical content. Chemical changes lead a substance to transform into a completely other substance with a new chemical formula.
The difference between a physical reaction and a chemical reaction is composition. In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition.
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Answer:
Physical changes simply affect a substance's appearance, not its chemical content. Chemical changes lead a substance to transform into a completely other substance with a new chemical formula.
Answer:
The difference between a physical reaction and a chemical reaction is composition. In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition.
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