Rate of reaction - Assessment

1.

Multiple Select

30 sec

1 pt

Which factors affect the rate of a reaction?

temperature

concentration

size

pressure

catalyst

2.

Multiple Choice

30 sec

1 pt

Increase in temperature causes the particles to

slow down

move faster

stay apart from each other

move in the correct order

3.

Multiple Choice

30 sec

1 pt

Why does a higher concentration increase the rate of reaction?

it increases the amount of reactants

it lowers the activation energy

it increases the energy of reactant particles

it increases the frequency of collision

4.

Multiple Choice

30 sec

1 pt

Why does a higher temperature increase the rate of a reaction?

It increases both the frequency collision and energy of reactant particles

It only increases the frequency of collision

It only increases the energy of reactant particles

It reduces the activation energy of the reaction

5.

Multiple Choice

30 sec

1 pt

What is the rate of reaction?

How fast a reaction is

How big a reaction is

How loud a reaction is

How much gas a reaction produces

6.

Multiple Choice

30 sec

1 pt

Grinding an effervescent tablet into powder increases the rate of reaction due to increase of

concentration

total surface area

temperature

size

7.

Multiple Choice

30 sec

1 pt

Catalyst helps to

increase the amount of product obtained

to lower the activation energy

provide an alternative reaction route

decrease the frequency of collision

8.

Multiple Choice

30 sec

1 pt

Which factors increase the rate of a reaction?

increasing temperature

increasing concentration

increasing total surface area

All of these

9.

Multiple Choice

30 sec

1 pt

Increasing pressure causes the reacting particles

to bond together

to repel from each other

gain more kinetic energy

to move closer together

10.

Multiple Choice

30 sec

1 pt

Increasing the temperature gives particles more __________.

time

energy

space

frequency

11.

Multiple Choice

30 sec

1 pt

As the frequency of ________________ collision increases, the rate of reaction increases.

time

speed

effective

efficient

12.

Multiple Choice

30 sec

1 pt

You add more bodies into a "mosh pit" to hope for more collisions. You have increased

temperature

concentration

pressure

catalyst

13.

Multiple Choice

30 sec

1 pt

You make a space much smaller by increasing the ________________ hoping to increase the reaction rates.

temperature

concentration

catalyst

pressure

14.

Multiple Choice

30 sec

1 pt

Why does breaking up a solid reactant increase the rate of reaction?

it creates more solid

it creates more energy

it increases the total surface area

it increases the concentration

15.

Multiple Choice

30 sec

1 pt

Why does a higher concentration increase the rate of reaction?

it increases the amount of reactants

it lowers the activation energy

it increases the energy of particle collisions

it increases the frequency of collisions

Explore this activity with a free account