Chapter 6.1

Question 1

Rate of reaction

Answer 1

The change in concentration of reactants or products per unit time

Question 2

Average rate of reaction formula

Answer 2

Change in concentration divided by timr

Question 3

Collision theory

Answer 3

For a reaction to occur particles must collide with a certain minimum amount of energy and with the correct orientstion

Question 4

Activation energy

Answer 4

The minimum amount of energy that colliding particles must possess to result in a reaction

Question 5

Transition state

Answer 5

The highest point on the potential energy curve

Question 6

True or false? Every reaction with energy greater than the activation energy results in a reaction.

Answer 6

False. There are other factors that can affect resction

Question 7

Factors that affect the rate of a chemical reaction

Answer 7

Concentration of reactants
Pressure
Surface area of solid reactants
Temperature
Catalysis

Question 8

For an ideal gas, the average kinetic energy of the particles in a gas is __ to its temperature in kelvin

Answer 8

Proportional

Question 9

At the same temperature __ particles travel faster than __ ones

Answer 9

Lighter, heavier

Question 10

What is the main reason why the rate of reaction increases with temperature?

Answer 10

It increases the number of particles with energy greater than it equal to the activation energy

Question 11

Catalyst

Answer 11

A substance that increases the rate of chemical reaction without itself being used up in the reaction

Question 12

How does a catalyst act?

Answer 12

By allowing the reaction to proceed by an alternative pathway of lower activation energy