Question

What is endothermic vs exothermic reactions?

Answer 1

`ΔH` value negative `->` energy released `->` exothermic reaction

`ΔH` value positive `->` energy absorbed `->` endothermic reaction

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..