In a chemical reaction, why does not every collision between reactant molecules result in formation of a product molecule?

Answer in explanation

Explanation:

Firstly, we need to know that for a chemical reaction to occur, there must be a collision between reactant particles. It is the collision between these reactant particles that lead to chemical reactions. While it is necessary that a collision must occur, it is a must that the collision should be effective too.

There might be several types of collision, the ones that result in a chemical reaction are the ones that are termed effective. It is only an effective collision that yield a chemical reaction. All other collision types are mere collisions are may not be effective enough to translate into a chemical reaction.

Hence, in a chemical reaction, it is not all collision that had occurred had resulted in it. Only the effective ones results into a chemical reaction. Those other collision did not result into a chemical reaction because that are not effective