Which sentence describes the energy changes that occur when a chemical reaction happens?
O A. Energy is absorbed to break bonds in the reactants and released
when the bonds in the products form.
B. Energy is released to break bonds in the reactants and absorbed
when the bonds in the products form.
C. Energy is released when bonds in the reactants break and when
bonds in the products form.
D. Energy is absorbed to break bonds in the reactants and to form
bonds in the products.

Answerwavelength;

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.