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Rates of Reaction

Rates of Reaction

The rate of reaction means how fast or how slow a reaction happens.

Increasing the temperature increases the frequency of collisions and energy of the particles also increases and the rate of reaction increases.

If the concentration of a reacting solution or the pressure of a reacting gas is increased, the particles are closer and the collisions between reactant particles increases.

Higher concentration increases the rate of reaction.

The larger the surface area, the more particles are exposed and the frequency of collisions between particles increases and the rate of reaction increases.

A catalyst is a substance that speeds up the rate of a reaction. Catalyst is not chemically changed or used up during the reaction.

Biological catalysts used in our bodies are called enzymes.

Catalysts increase the rate of reaction by providing a different pathway for the reaction that requires less energy.

The minimum energy the particles need in order to react is called the activation energy.