What are exothermic and endothermic reactions ?

What is meant by exothermic and endothermic reaction? Give examples

differentiate between exothermic and endothermic reaction.

What is endothermic reaction?

What is exothermic reaction?

Which among the following changes are exothermic or endothermic in nature? Decomposition of ferrous sulphate

Which among the following changes are exothermic or endothermic in nature? Dissolution of sodium hydroxide in water