Question

what term describes the gain or loss of energy when bonds are made or broken? enthalpy convection entropy vaporization

Explanation:

To solve this, we analyze each option:

• Enthalpy: It is the heat content of a system, and specifically relates to the energy change (gain or loss) during bond formation or breaking (e.g., in chemical reactions).
• Convection: It is a mode of heat transfer (through fluid movement), not related to bond energy changes.
• Entropy: It measures the disorder or randomness of a system, not energy change from bonds.
• Vaporization: It is the process of a liquid turning to gas, not about bond energy changes.

So the correct term is enthalpy.

Answer:

A. enthalpy