Question

write about exothermic and endothermic reaction ​

Answer 1

1. The process which involves the release of heat energy is called as exothermic reaction.

Ex:- Burning of paper

2. The process which involves the release of heat energy is called endothermic reaction.

Ex:- Melting of ice

Answer 2

Answer:

all chemicals involve the transfer of energy. endothermic process requires an input of energy to proceed and her signified by a positive change in enthalpy .

while

exothermic processes release energy upon completion and signified by a negative change in enthalpy ......

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