Which term describes a reaction that releases energy in the form of heat?

Which term describes a reaction that releases energy in the form of heat?

• A. Endothermic reaction
• B. Physical Change
• C. Chemical Equation
• D. Exothermic reaction

Answer: (D)

When a reaction releases energy as heat, the process is exothermic. In exothermic reactions, energy stored in bonds is released to the surroundings, often causing the temperature to rise. This contrasts with endothermic reactions, which absorb heat from the surroundings, making things feel cooler. A physical change is a change in form or state without forming or breaking chemical bonds in a way that releases heat. A chemical equation is just a written representation of reactants turning into products and doesn’t by itself indicate heat release. So, the term that describes a reaction releasing energy as heat is exothermic.

When a reaction releases energy as heat, the process is exothermic. In exothermic reactions, energy stored in bonds is released to the surroundings, often causing the temperature to rise. This contrasts with endothermic reactions, which absorb heat from the surroundings, making things feel cooler. A physical change is a change in form or state without forming or breaking chemical bonds in a way that releases heat. A chemical equation is just a written representation of reactants turning into products and doesn’t by itself indicate heat release. So, the term that describes a reaction releasing energy as heat is exothermic.