Module 4: Reaction Rates and Chemical Equilibrium

Front

What is activation energy?

Back

Minimum amount of energy required to start a chemical reaction.

Front

What is a catalyst?

Back

A substance that increases the rate of reaction by decreasing activation energy.

Front

What does it mean for a chemical reaction to be in equilibrium?

Back

No net change in the concentrations of reactants and products.

Front

What happens if additional reactant is added according to Le Chatelier's principle?

Back

The system will move in the forward direction to consume the added reactant.

Front

What is Le Chatelier's Principle used for in chemistry?

Back

Predicting the effect of a change in conditions on a chemical equilibrium.

Front

Define chemical equilibrium.

Back

A state in which the rates of the forward and reverse reactions are equal, resulting in constant concentrations of reactants and products.

Front

What is the effect of temperature on reaction rates?

Back

Increasing temperature generally increases reaction rates by providing more energy to the reactants.

Front

What is a reversible reaction?

Back

A reaction that can proceed in both the forward and reverse directions.

Front

What is the difference between endothermic and exothermic reactions?

Back

Endothermic reactions absorb heat, while exothermic reactions release heat.

Front

What is the role of concentration in reaction rates?

Back

Increasing the concentration of reactants typically increases the rate of reaction.