Front

What is activation energy?

Back

The minimum energy required for a chemical reaction to occur.

Front

What does an endothermic reaction do?

Back

It absorbs heat from its surroundings.

Front

What is an exothermic reaction?

Back

A reaction that releases heat to its surroundings.

Front

How does temperature affect the rate of a chemical reaction?

Back

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

Front

What is the effect of concentration on reaction rate?

Back

Increasing concentration increases the number of collisions between reactant particles, thus increasing the reaction rate.

Front

What is the role of a catalyst in a chemical reaction?

Back

A catalyst speeds up a reaction by lowering the activation energy without being consumed in the process.

Front

What is the difference between a reactant and a product?

Back

Reactants are substances that undergo a chemical change, while products are the substances formed as a result of the reaction.

Front

What is dynamic equilibrium in a chemical reaction?

Back

It is the state where the rate of the forward reaction equals the rate of the reverse reaction, resulting in no net change in concentration.

Front

What does ΔH represent in a chemical reaction?

Back

ΔH represents the change in enthalpy, or heat content, of a system during a reaction.

Front

What is the effect of surface area on reaction rate?

Back

Increasing the surface area of reactants increases the reaction rate by allowing more collisions to occur.