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

A change in state.

A change in mass.

A change in energy.

A change in concentration.

User Brett Mathe
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A change in energy ......
User Nawfal Cuteberg
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A change in mass because there is no overall change in the amount of energy during the reaction and every chemical reaction involves conversion between energy and mass
User Atrujillofalcon
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