Question

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

Explanation:

A chemical reaction involves the breaking and forming of chemical bonds, which is due to the rearrangement of electrons. Energy - release or absorption (exothermic or endothermic) is not always the case. Also, according to the law of conservation of mass, the total mass in a chemical reaction remains constant.

Answer:

the rearrangement of electrons to break or form chemical bonds