Difference between exothermic and endothermic reactions:
Exothermic reaction
- Heat is given out during the reaction.
- Heat liberated is indicated by a positive sign on the product side.
- An exothermic reaction is represented
reactants → product + heat
- Energy of the reactant is greater than the product.
Endothermic reaction
- Heat is absorbed during the reaction,
- Heat observed is indicated by negative sign on the product side.
- An endothermic reaction is represented as
reactants → product – heat
- Energy of the reactants is lesser than the products.
Activity and questions based on it.
Activity 1
Take sulphur powder in a China dish. Mix iron granules in it and heat