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What does every chemical reaction involve? A change in concentration. A change in mass. A change in state. A change in energy.

What does every chemical reaction involve? A change in concentration. A change in mass. A change in state. A change in energy.
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What does every chemical reaction involve?

A change in concentration.
A change in mass.
A change in state.
A change in energy.

User Memon
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2 Answers

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Chemical reactions involve breaking bonds in reactants and forming new bonds in products. Breaking bonds requires energy, and forming bonds releases energy.
User RinSer
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8.2k points
3 votes
D. A change in energy.
User Brgerner
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8.1k points
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