Question

in a chemical reaction, which event always occurs as the reaction proceeds? a. the rearrangement of electrons to break or form chemical bonds b. the release of energy to the environment c. the absorption of energy from the environment

Explanation:

Chemical reactions involve the breaking and forming of chemical bonds. This occurs through the rearrangement of electrons. Energy - release or absorption (options B and C) can happen, but is not always the case. Endothermic reactions absorb energy, while exothermic reactions release energy. However, electron - bond rearrangement is universal in chemical reactions.

Answer:

A. the rearrangement of electrons to break or form chemical bonds