What are exothermic and endothermic chemical reactions?

What are exothermic and endothermic reactions ?

What is meant by exothermic and endothermic reaction? Give examples

Give an example each for exothermic and endothermic reactions.

Draw the enthalpy diagram for exothermic and endothermic reaction.

Differentiate exothermic and endothermic reactions.

What is the significance of the second law of thermodynamics in the spontaneity of exothermic and endothermic reactions?

differentiate between exothermic and endothermic reaction.