key term - Exothermic Process

Definition

An exothermic process is a chemical or physical change that releases heat energy to the surroundings. It is characterized by a decrease in enthalpy (ΔH < 0) and an increase in temperature.

Related terms

Endothermic Process:

A chemical or physical change that absorbs heat energy from the surroundings, resulting in an increase in enthalpy (ΔH > 0).

Combustion:

A type of exothermic reaction where a substance reacts with oxygen to produce heat and light.

Heat of Reaction: The amount of heat released or absorbed during a chemical reaction, which can be positive (endothermic) or negative (exothermic).