A chemical reaction is a reaction that results in the formation of a new substance. During a chemical reaction, chemical bonds are broken and new ones are formed. For this to happen, the atoms must collide with enough energy to break and form these chemical bonds.
The rate of a reaction can be increased in the following ways:
Temperature is the measure of the average kinetic energy in a substance. When a substance is heated, more collisions occur and more of the particles have enough energy to react, so the reaction rate is increased.
Concentration is the number of particles in a given volume. As the concentration of the reactants is increased, there are more particles present and so more successful collisions occur and the reaction rate is increased.
When the surface area of a solid is increased, more particles are exposed, so more collisions occur and the reaction rate is increased.
Catalysts are chemicals that reduce the amount of energy required for a chemical reaction to occur. This means that more of the particles have enough energy for a successful reaction to occur. Catalysts speed up a reaction but are unchanged by the reaction.
The rate of a reaction can be increased in the following ways:
Temperature is the measure of the average kinetic energy in a substance. When a substance is heated, more collisions occur and more of the particles have enough energy to react, so the reaction rate is increased.
Concentration is the number of particles in a given volume. As the concentration of the reactants is increased, there are more particles present and so more successful collisions occur and the reaction rate is increased.
When the surface area of a solid is increased, more particles are exposed, so more collisions occur and the reaction rate is increased.
Catalysts are chemicals that reduce the amount of energy required for a chemical reaction to occur. This means that more of the particles have enough energy for a successful reaction to occur. Catalysts speed up a reaction but are unchanged by the reaction.