collision theory

What must happen for a chemical reaction to occur?

Reactant molecules must collide with enough energy to break bonds, allowing new bonds to form and make product molecules.

What is required during a collision for a reaction to happen?

The collision must provide enough energy to break the bonds in the reactants.

What happens after the bonds in reactants break?

New chemical bonds form to create product molecules.

How does surface area affect reaction rate?

Smaller lumps = larger surface area = more chances of successful collisions.

Why does crushing a solid speed up a reaction?

Crushing increases surface area, exposing more particles for collisions, which increases the reaction rate.

How does concentration affect the rate of reaction?

Higher concentration = more particles in the same space = more frequent collisions = faster reaction.

In gas reactions, what is concentration the same as?

Pressure — higher pressure means more particles in a smaller space, increasing the chance of collisions.