The energy released (exothermic) or adsorbed (endothermic) in a chemical reaction is a result of:

loss of energy.

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gain of energy.

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energy transfer between atoms and their environment.

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None of the above.

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Solution

The correct option is C energy transfer between atoms and their environment.
The energy released (exothermic) or adsorbed (endothermic) in a chemical reaction is a result of energy transfer between atoms and their environment.

Suggest Corrections

	Column I		Column II
a.	the amount of energy which must be invested in reaction to get it started	p.	chemical equilibrium
b.	a state in which the rate of forward reaction is exactly equal to the rate of the reverse reaction.	q.	activation energy
c.	a process or reaction which consumes heat	r.	endothermic
d.	a process or reaction that releases heat.	s.	exothermic
		t.	threshold energy