Question

what is exothermic and endothermic reactions.​

Answer 1

Answer:

Exothermic reaction

      Endothermic reaction

1. Heat evolved during the reaction.

   1. Heat absorbed during the reaction.

2. ΔH=−ve

   2. ΔH=+ve

3. Energy of product is lesser than that of reactant.

   3. Energy of product is greater than that of reactant.

Explanation:

Explanation

Please not that: ΔH is Enthalpy

Enthalpy of a reaction is defined as the heat energy change (ΔH) that takes place when reactants go-to products.

If heat is absorbed during the reaction, ΔH

is positive (endothermic)

if heat is released, then ΔH is negative

(exothermic)

But if you mean the (Endothermic vs Exothermic) reactions it

is either;

The Difference between them or Similarities between them

Rather they might also want you to compare between their

two.