Flashcard: Factors that Affect Reaction Rate

Front

What are the main factors that affect the rate of a chemical reaction?

Back

The main factors that affect the rate of a chemical reaction include temperature, concentration of reactants, surface area, and the presence of catalysts.

Front

How does temperature affect the rate of a reaction?

Back

Increasing the temperature generally increases the reaction rate because particles move faster, leading to more frequent and energetic collisions.

Front

What effect does decreasing the temperature have on reaction rate?

Back

Decreasing the temperature lowers the reaction rate because particles move more slowly, resulting in fewer collisions.

Front

How does concentration affect the rate of a reaction?

Back

Increasing the concentration of reactants increases the reaction rate because there are more particles available to collide.

Front

What is the effect of surface area on the rate of reaction?

Back

Increasing the surface area of a solid reactant increases the reaction rate because it allows more particles to be exposed and available for collisions.

Front

What role do catalysts play in chemical reactions?

Back

Catalysts increase the rate of a reaction without being consumed by lowering the activation energy required for the reaction.

Front

What is activation energy?

Back

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

Front

How does crushing a solid reactant affect the reaction rate?

Back

Crushing a solid reactant increases its surface area, which increases the reaction rate by allowing more collisions to occur.

Front

What happens to the reaction rate when the concentration of reactants is decreased?

Back

Decreasing the concentration of reactants lowers the reaction rate because there are fewer particles available to collide.

Front

What is the relationship between temperature and particle movement?

Back

As temperature increases, the movement of particles increases, leading to more frequent and energetic collisions.