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Foundations
Reaction Behavior
Temperature Effects
Catalysts
Rate Laws & Mechanisms
100

What is the study of how fast a reaction proceeds?

Reaction kinetics

100

If the decomposition of hydrogen peroxide is spontaneous, why can’t we see it decompose?

The reaction happens too slowly.

100

Increasing temperature increases what in a chemical reaction?

The rate

100

What does a catalyst do?

Dramatically increases the rate of a chemical reaction.

100

K stands for what in a chemical reaction?

The rate constant

200

What is the rate of change of a product in a chemical reaction?

Reaction rate

200

Chemical reactions never actually …?

  • Finish. They just keep getting slower and slower until they proceed imperceptibly slow.
200

The rate of many chemical reactions doubles for every what in temperature?

Ten degree increase

200

How does a catalyst speed up reaction rate?

  • By lowering the activation energy of the reaction.
200

This expression represents a general chemical equation that has reactants A and B, which react to form the products C and D.

The rate equation

300

What is a controlled experiment?

  • a test done with one test done under standard conditions and the rest of the tests with different changes
300

Decreasing the concentration decreases the chemical reaction rate because…why?

  • There are fewer molecules to collide with one another.
300

Decreasing the activation energy of a reaction increases its what?

Rate

300

Define a heterogeneous catalyst

Catalysts that are in a different phase than the reactants.

300

What should be the exponent in rate equations that is unaffected by the concentration of one of its reactants?

Zero

400

What must happen for a chemical reaction to proceed?

  • the chemicals must collide with one another so that their electrons can be either transferred or rearranged
400

Increasing the surface area of a reactant increases the rate because…why?

  • The molecules of the reactant can more easily mingle with the molecules of the other reactants
400

How must reaction rate orders for a chemical reaction be determined?

Experimentally

400

Define a homogeneous catalyst

Catalysts that have the same phase as at least one of the reactants.

400

What is a series of chemical equations that tells the step-by-step process by which a chemical reaction occurs?

A reaction mechanism