Question

differentiate between exothermic and endothermic reactions. At least 3 differentiating points.

Answer 1

Hey Friend !

Exothermic Reaction :-
It is the reaction in which ,energy is released into the surroundings .
The energy released is in the form of light , heat or sound.
The energy is released from the system to the environment
Examples :-
<> Rusting of iron
<> Nuclear fission

Endothermic reaction:-
It is the reaction in which ,energy is absorbed from the surroundings .
The energy is absorbed in the form of heat
Energy is absorbed from the surroundings into the system.
 Examples:-
<>Melting of ice
<> Cooking of food

Hope this Helps You !

Answer 2

"The difference between exothermic and endothermic reactions are given below.

Exothermic reactions:

1. If "chemical reactions" release energy into their surroundings, it is called as exothermic reactions.
2. In this reaction, the temperature increases during the progress of the reaction.
3. Reactants enthalpy is higher than the products.
4. Enthalpy change is negative.

Endothermic reactions:

1. If the chemical reactions absorb the heat energy from their surroundings, it is called exothermic reactions.
2. In this reaction, the temperature will decrease during the progress of reactions.
3. Reactants enthalpy is lower than the products.
4. Enthalpy change is positive."