# What Does One Mean by Exothermic Reaction? Give Example. - Science

What does one mean by exothermic reaction? Give example.

#### Solution 1

exothermic : Chemical reactions that release energy in the form of heat, light, or sound are called exothermic reactions.

Example: C (g) + O2 (g) → CO2 + Heat Energy

#### Solution 2

Exothermic reaction – A reaction in which heat is released is called the exothermic reaction. Burning of fuel is an example of exothermic reaction. When methane is burnt it gives heat along with carbon dioxide and water.

CH4(g) "heat"/>CO2(g)+H2O

Concept: Types of Chemical Change or Chemical Reaction - Decomposition Reactions
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