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12-06-2017
Chemistry

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Which is a characteristic of a physical change? (2 points) The chemical bonds in the substance are unchanged. The change cannot be seen. The molecules all move at the same speed. The substance has reacted with another substance.

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mckennadivaaa mckennadivaaa

17-06-2017

The answer is the first option: "The chemical bonds in the substance are unchanged". Hope I helped! :)

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