Chemistry Exam Term 1

Question 1

States that atoms, ions, or molecules must collide in order to react

Answer 1

collision theory

Question 2

Minimum amount of energy required to form the activated complex

Answer 2

activation energy

Question 3

A substance that slows down reaction rates

Answer 3

inhibitor

Question 4

Substance that increases the rate of a chemical reaction without
being used up

Answer 4

catalyst

Question 5

Mathematical relationship between the rate of a chemical reaction and the concentrations of the reactants

Answer 5

rate law

Question 6

Numerical value that relates reaction rate and concentration at a given temperature

Answer 6

specific rate
constant

Question 7

The ________________________ is a specific reaction rate determined by finding the slope of the
straight line tangent to the curve of a plot of the change in concentration of a reactant versus time.

Answer 7

instantaneous rate

Question 8

A(n) ________________________ consists of two or more elementary steps.

Answer 8

complex reaction

Question 9

A substance produced in one elementary step and consumed in a subsequent elementary step is a(n)
________________________ .

Answer 9

intermediate

Question 10

The ________________________ for a reactant defines how the reaction rate is affected by the
concentration of that reactant.

Answer 10

reaction order

Question 11

A(n) ________________________ is the complete sequence of elementary steps that make up a
complex reaction.

Answer 11

reaction mechanism

Question 12

The ________________________ is the slowest of the elementary steps in a complex reaction.