Unit 14

Question 1

What dose heat do to the rate of a chemical reaction

Answer 1

It speeds it up

Question 2

If 2 molecules want to react together what is the first thing that must happen

Answer 2

The molecules need to get close together so they can react

Question 3

Why does the rate of a chemical reaction increase with increasing reactant concentration

Answer 3

Because there are more molecules so it is easier for them to get closer together

Question 4

If one of the reactants in a chemical equation is zero what happens if you double the concentration of that reactant

Answer 4

It stays the same

Question 5

What do we call a chemical that increases the rate of a chemical reaction without getting used up in the process

Answer 5

Catalyst

Question 6

If there are 2 reactions, one has a higher activation energy and one has a lower activation energy which has a faster reaction rate

Answer 6

The one with the lower activation energy

Question 7

Homogenous catalyst

Answer 7

Have the same phase as at least one of the reactants

Question 8

Heterogeneous catalyst

Answer 8

Dose not have the same phase as any of the reactants

Question 9

What do you need to do to the rate of the equation when you increase the temperature

Answer 9

Times the initial rate by 2 for every 10 degrees centigrade of increase

Question 10

How does the rate constant of temperature increase

Answer 10

Exponentially

Question 11

How do you find the overall order or an equation

Answer 11

Add X plus Y

Question 12

The order of a chemical reaction without respect to one of its reactants is 3 if you quadruple the concentration what happens to the rate

Answer 12

It increases by a factor of 64