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Rate of Reaction in Chemistry

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Questions and Answers

What characteristic of the reactants is directly related to the rate of a chemical reaction?

Volume

Density

Mass

Concentration (correct)

How does an increase in temperature affect the kinetic energy of molecules?

Increases kinetic energy (correct)

Causes molecules to stop moving

Has no effect on kinetic energy

Decreases kinetic energy

What role does surface area play in the rate of a chemical reaction?

Increases the rate of reaction (correct)

Increases the activation energy

Has no effect on the reaction

Decreases the rate of reaction

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

Lowers the activation energy Signup and view all the answers

How does a higher concentration of reactants affect the rate of collision between molecules?

Increases collision rate Signup and view all the answers

What is the definition of rate of reaction in a chemical reaction?

The change in concentration divided by time Signup and view all the answers

Which units are typically used to measure concentration in rate of reaction?

Molarity Signup and view all the answers

What is the determining factor affecting the rate of a chemical reaction?

Collision rate Signup and view all the answers

How do factors like temperature, concentration, surface area, and catalyst affect the rate of a chemical reaction?

By altering the amount of collisions occurring between reactants Signup and view all the answers

What does the collision theory state about chemical reactions?

Reactions depend on collisions between molecules for the chemical composition change Signup and view all the answers