Which of the following is a correct statement about collision theory?

A. All collisions lead to chemical reactions.
B. Most collisions lead to chemical reactions.
C. Very few reactions involve particle collisions.
D. Effective collisions lead to chemical reactions.
E. Reactions do not require particles to collide.

I would go with D

Option A is correct....when particles of compounds collide,a chemical reaction occur....

Effective collision will speed the reaction,due to high activation energy.

A cannot be right. ALL collisions don't result in a reaction; only some collisions will result in a reactioln

The correct statement about collision theory is D. Effective collisions lead to chemical reactions.

To understand collision theory, let's break down each option:

Option A: "All collisions lead to chemical reactions." This statement is not correct. In any given system, not all collisions between particles will result in a chemical reaction. Only specific conditions, such as correct orientation and sufficient energy, can lead to a reaction.

Option B: "Most collisions lead to chemical reactions." This statement is not entirely correct. While many collisions may occur between particles, only a fraction of them will result in a chemical reaction due to the requirements mentioned earlier.

Option C: "Very few reactions involve particle collisions." This statement is incorrect. In chemistry, most reactions do involve particle collisions, as the interaction between reactant molecules or atoms is necessary for a chemical change to occur.

Option D: "Effective collisions lead to chemical reactions." This statement correctly summarizes collision theory. For a chemical reaction to occur, the colliding particles must have sufficient energy (activation energy) and the appropriate orientation. These collisions, referred to as effective collisions, result in a chemical reaction.

Option E: "Reactions do not require particles to collide." This statement is incorrect. In general, chemical reactions occur when particles collide and undergo a rearrangement of their atoms, leading to the formation of new compounds or molecules.

In summary, the correct statement about collision theory is that effective collisions lead to chemical reactions (Option D).