Mr. Guch Ch. 17: Chemical Reaction Mechanisms and Rates

Front

What is a catalyst?

Back

A substance that increases the rate of a chemical reaction without being consumed in the process.

Front

What is the rate law in chemistry?

Back

The mathematical relationship that relates the rate of a chemical reaction to the concentration of its reactants.

Front

What does 'zeroth order' mean in reaction order?

Back

A reaction order where the rate of reaction is independent of the concentration of the reactant.

Front

How does temperature affect chemical reactions?

Back

Increasing the temperature generally increases the rate of a chemical reaction.

Front

What is the main focus of Figure 17.7 in Mr. Guch Ch. 17?

Back

The wonders of nature and a disturbing description of squirrel evolution.

Front

What is the effect of concentration on reaction rate?

Back

Generally, increasing the concentration of reactants increases the rate of reaction.

Front

Define 'activation energy'.

Back

The minimum energy required for a chemical reaction to occur.

Front

What is a reaction mechanism?

Back

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

Front

What is the difference between a homogeneous and heterogeneous catalyst?

Back

A homogeneous catalyst is in the same phase as the reactants, while a heterogeneous catalyst is in a different phase.

Front

What is the role of a rate constant in a rate law?

Back

The rate constant is a proportionality factor that relates the rate of reaction to the concentrations of reactants.