Question

What must happen before a chemical reaction can begin?
a. The activation energy must be exceeded.
b. The activation energy must be reached.
c. The concentrations of products and reactants must be equal.
d. The concentration of reactant molecules must be reduced.

Answer 1

Answer:

Your answer would be B

Explanation:

In order to start a chemical reaction, energy is needed

Answer 2

Answer:

Option B

The activation energy must be reached.

Explanation:

According to the collision theory, the following criteria must be met in order for a chemical reaction to occur: Molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break. Molecules must collide with the proper orientation.

Please Mark me brainliest