Unit 7

Question 1

Entropy

Answer 1

Measure of degree of randomness as particles move

Question 2

Chemical Equilibrium

Answer 2

Rate of forward reaction equals rate of reverse reaction and the concentrations of products and reactants remain unchanged

Question 3

Activated Complex

Answer 3

The maximum energy point along the reaction path

Question 4

Activation Energy

Answer 4

The minimum energy that must be input to a chemical system with potential reactants to cause a chemical reaction

Question 5

Collision Theory

Answer 5

Qualitatively explains how chemical reactions occur and why reaction rates differ for different reactions

Question 6

Catalyst

Answer 6

A substance that speeds up a chemical reaction, but is not consumed by the reaction

Question 7

Reversible reaction

Answer 7

Products can react to re-form the reactants

Question 8

LeChatelier’s Principle

Answer 8

If a stress is applied to a system at equilibrium the system shifts in the direction that relieves the stress

Question 9

Reaction rate

Answer 9

Change in concentration of a reactant or product per unit of time

Question 10

Inhibitor

Answer 10

Slows down reaction rate or prevents reaction from happening