Question

1- A CHANGE IN WHICH ENERGY IS RELEASED IN THE FORM OF HEAT

2- A CHANGE IN WHICH ENERGY IS ABSORBED IN THE FORM OF HEAT​

Answer 1

Answer:

1 ) Exothermic reactions release heat and light into their surroundings. For example, combustion reactions are usually exothermic. In exothermic reactions, the products have less enthalpy than the reactants, and as a result, an exothermic reaction is said to have a negative enthalpy of reaction.

2)A chemical reaction or physical change is endothermic if heat is absorbed by the system from the surroundings. In the course of an endothermic process, the system gains heat from the surroundings and so the temperature of the surroundings decreases.

Explanation:

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Answer 2

Answer:

answer;-

Explanation:

1) exothermic change

2) endothermic change