Rates of Reactions

Front

What is activation energy?

Back

The minimum energy required for a chemical reaction to occur.

Front

What does the rate of reaction refer to?

Back

How fast the concentration of a reactant or product changes at a stated temperature.

Front

What is an effective collision in a chemical reaction?

Back

A collision between molecules that occurs with proper orientation and sufficient kinetic energy.

Front

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

Back

It increases the rate of reaction by providing more area for collisions to occur.

Front

What is the significance of temperature in chemical reactions?

Back

Higher temperatures increase the kinetic energy of molecules, leading to more frequent and effective collisions.

Front

What role do catalysts play in chemical reactions?

Back

Catalysts lower the activation energy, increasing the rate of reaction without being consumed.

Front

What is the difference between exothermic and endothermic reactions?

Back

Exothermic reactions release energy, while endothermic reactions absorb energy.

Front

How does concentration affect the rate of reaction?

Back

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

Front

What is the collision theory?

Back

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

Front

What is a reaction mechanism?

Back

The step-by-step sequence of elementary reactions by which overall chemical change occurs.