1. Use a catalyst.
A catalyst is a substance that can alter the rate of a chemical reaction.
2. Increase the temperature.
For most chemical reactions, temperature is directly proportional to the rate of a chemical reaction.
3. Concentrate on the reactants.
The concentration of the reactants also plays an important role in determining the rate of a chemical reaction.
And finally the fourth way.
4. Increase the surface area of the reactants.
Increasing the surface area of the reactants increases the rate of the reaction.