The minimum amount of energy required for a chemical reaction to occur is known as the

 The minimum amount of energy required for a chemical reaction to occur is known as the

A. activation energy.

B. bond energy.

C. energy of formation.

D. energy of reaction.

E. free energy.

The correct answer is A. activation energy.

Explanation: The minimum amount of energy required for a chemical reaction to occur is known as the activation energy. Which makes option A correct.

The other options do not express the answer to the question. 

Option B. Bond energy is the energy required for the formation of breaking of bonds. 

Option C. The energy of formation is incorrect because, we only have heat of formation not energy of formation.

Option D. The energy of reaction is incorrect because, we only have heat of reaction not energy of reaction.

Option E. Free energy is the energy accompanying some chemical reaction.

SOURCE: NECO CHEMISTRY 2001 QUESTION 23.