Final answer:
Chemical reaction rates depend largely on the chemical nature of the reacting substances, the state of subdivision of the reactants, and the temperature of the reactants.
Step-by-step explanation:
The rates of chemical reactions largely depend on several factors:
- The chemical nature of the reacting substances: Different reactants have different reaction rates even under the same conditions.
- The state of subdivision of the reactants: Reactions proceed more rapidly when reactants are in smaller particles, as this increases the surface area available for reaction.
- The temperature of the reactants: Higher temperatures generally increase the reaction rate as more reactant molecules have sufficient energy to overcome the activation energy barrier.