barnettcooper04 barnettcooper04

03-01-2018
Chemistry

contestada

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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nafisiqbal nafisiqbal

03-01-2018

D. A change in energy.

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williamheredia4 williamheredia4

03-01-2018

Chemical reactions involve breaking bonds in reactants and forming new bonds in products. Breaking bonds requires energy, and forming bonds releases energy.

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