Reaction Rates and Collision Theory

Front

What is Collision Theory?

Back

Collision Theory states that for a reaction to occur, reactant particles must collide with sufficient energy and proper orientation.

Front

What factors affect the rate of a chemical reaction?

Back

Factors include temperature, concentration of reactants, surface area, and the presence of catalysts.

Front

How does increasing the surface area of a reactant affect the reaction rate?

Back

Increasing the surface area allows more particles to collide, thus increasing the rate of reaction.

Front

What is the effect of temperature on reaction rates?

Back

Increasing temperature increases the kinetic energy of particles, leading to more frequent and energetic collisions.

Front

What is activation energy?

Back

Activation energy is the minimum energy required for a chemical reaction to occur.

Front

How does a catalyst affect a chemical reaction?

Back

A catalyst lowers the activation energy, increasing the rate of reaction without being consumed.

Front

What happens to reaction rates at lower temperatures?

Back

At lower temperatures, reaction rates decrease due to reduced kinetic energy and fewer collisions.

Front

What is the role of concentration in reaction rates?

Back

Higher concentration of reactants increases the likelihood of collisions, thus increasing the reaction rate.

Front

What is meant by 'effective collision'?

Back

An effective collision is one that results in a chemical reaction, requiring sufficient energy and proper orientation.

Front

How does grinding a solid reactant into powder affect the reaction rate?

Back

Grinding increases the surface area, allowing more collisions and thus increasing the reaction rate.