Reactions cannot occur without a certain minimum amount of energy. what is this minimum amount of energy called? a. the activation energy b. the activated complex c. the kinetic energy of reactants d. the potential energy of products

The correct answer is option A.

Explanation:

Activation energy is defined as amount of energy given to a chemical system with which results in chemical reaction.Or minimum amount of energy required by the reactants to undergo a chemical reaction.

Activation complex  is a state in a chemical reaction which attained at very high temperature. It is an intermediate  state between reactant and product.

The kinetic energy of reactants is the energy due to motion of the reactant molecules.

The potential energy of products is the chemical energy possessed in the bonds of the product.

c, liquids evaporate, creating a gas