Given the generic equation below, add the word “Energy” to the proper side to indicate an exothermic reaction. A + B 🡪 C + D

Question

1. Given the generic equation below, add the word “Energy” to the proper side to indicate an exothermic reaction. Then do one for the endothermic Reaction.

A + B 🡪 C + D

Answer 1

An exothermic reaction means heat (energy) is given off to the surroundings. That means that heat (energy) will be a product, rather than a reactant.

A + B ==> C+ D + energy

For an endothermic reaction, heat is absorbed from the surroundings into the system, so heat (energy) will be a reactant.

A + B + energy ==> C+ D