What factors affect exothermic reactions?

In this case, the formation of ice from water or water from water vapour is an example of an exothermic reaction, which typically happens when bonds form.

One well-known example of an exothermic process is a combustion reaction.

There are only four factors that you can control in order to increase the reaction rate: -

The rate of reaction increases with concentration.

A reaction rate is accelerated by heat.

The surface area at which a reaction can occur; a higher surface area leads to a quicker rate of reaction

Observe that each of these elements raises the molecules' internal kinetic energy, giving them a better chance of colliding with one another at the ideal energy and orientation.

The factors affecting exothermic reactions include:

1. Temperature
2. Concentration of reactants
3. Catalysts
4. Surface area of reactants
5. Pressure (for reactions involving gases)
6. Nature of reactants