Collision Theory and Reaction Rates

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 temperature affect reaction rates?

Back

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

Front

What is a catalyst?

Back

A catalyst is a substance that increases the rate of a chemical reaction without being consumed, typically by lowering the activation energy.

Front

What is activation energy?

Back

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

Front

How does surface area affect reaction rates?

Back

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

Front

What is the effect of concentration on reaction rates?

Back

Higher concentration of reactants leads to more collisions, thus increasing the reaction rate.

Front

What role do enzymes play in biological reactions?

Back

Enzymes are biological catalysts that speed up reactions by lowering the activation energy.

Front

What happens to reaction rates when a catalyst is added?

Back

The reaction rate increases because the catalyst lowers the activation energy required for the reaction.

Front

What is the relationship between collision frequency and reaction rate?

Back

Higher collision frequency generally leads to a higher reaction rate.