Question

Reactions cannot occur without a certain minimum amount of energy. what is this minimum amount of energy called?

Answer 1

This type of energy would be called reaction energy.

Answer 2

Step-by-step explanation:

The minimum amount of energy required by the species to undergo a certain reaction is known as activation energy.

Without activation energy reactions cannot occur.

Also, reactants cannot participate in a reaction unless and until they do not cross energy barrier.

Hence, to result in the formation of products it is necessary for reactants to cross the energy barrier.