In most chemical reactions, energy is released or added to the system in the form of heat, light, electrical, or mechanical energy.
(energy; is released; L:In most chemical reactions) (energy; added; to the system in the form of heat, light, electrical, or mechanical energy; L:In most chemical reactions)
energy energy
is released added
L:In most chemical reactions
to the system in the form of heat, light, electrical, or mechanical energy L:In most chemical reactions