Chemistry in the Earth System IS4T3 Review: 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 the correct orientation.

Front

How does temperature affect reaction rates?

Back

Higher temperatures increase the rate of a reaction by increasing both the frequency and energy of particle collisions.

Front

What is the effect of concentration on reaction rates?

Back

Increasing the concentration of reactants generally increases the rate of reaction due to a higher frequency of collisions.

Front

What role does surface area play in reaction rates?

Back

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

Front

What happens to reaction rates when pressure is increased for gases?

Back

Increasing pressure decreases the volume available to gas particles, leading to more frequent collisions and a faster reaction rate.

Front

What is activation energy?

Back

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

Front

What occurs if molecules collide but not in the correct orientation?

Back

If molecules collide but not in the correct orientation, no reaction occurs.

Front

How does crushing a solid reactant affect the reaction rate?

Back

Crushing a solid reactant increases its surface area, leading to a higher reaction rate.

Front

What is the relationship between reaction rate and the size of the container for gases?

Back

Shrinking the size of the container for a gas increases the reaction rate due to more frequent collisions.

Front

What factors affect the rate of reaction?

Back

The rate of reaction is affected by temperature, concentration, pressure, and surface area.