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C8 Revision Quiz Rate of Reaction

Total questions: 50

Worksheet time: 45mins

Name
Class
Date
1.

According to Mr Bs revision tips, what should you offer to do while a family member quizzes you on your flash cards?

a)

Go on playstation

b)

stare at the wall

c)

make them a cup of tea and do the washing up

d)

bake them a sponge cake

2.

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

a)

it increases both the frequency and energy of particle collisions

b)

it only increases the frequency of particle collisions

c)

it only increases the energy of particle collisions

d)

it reduces the activation energy of the reaction

3.

Grinding a effervescent tablet into powder increases the rate of reaction due to increased

a)

concentration

b)

surface area

c)

temperature

d)

reactants

4.

Adding a catalyst ___________ the activation energy.

a)

Raises

b)

Lowers

c)

Doesn't affect

d)

Inreases

5.

The minimum amount of energy needed for colliding particles to react is called

a)

Chemical Energy

b)

Kinetic Energy

c)

Activation Energy

d)

Potential Energy

6.

Which graph shows the effect of increasing temperature on the rate of reaction of calcium carbonate with dilute hydrochloric acid?

a)
b)
c)
d)
7.
The graph shows how the total volume of a gas given off from a reaction changes with time. In which time interval is least gas given off? 
a)
A
b)
B
c)
C
d)
D
8.
In an experiment, a 2 g lump of zinc and 2 g of powdered zinc are added separately to equal volumes of dilute sulphuric acid. The solid line on the graph shows the volume of gas given off when the 2 g lump is used. Which dotted line is obtained when the zinc is powdered? 
a)
A
b)
B
c)
C
d)
D
9.
A student investigated the rate of reaction of calcium carbonate with dilute hydrochloric acid. Every minute, the student recorded the total volume of carbon dioxide produced, until some time after the reaction was complete.
Which graph shows the correct results? 
a)
A
b)
B
c)
C
d)
D
10.
Order the letters from highest to lowest rate of reaction.
a)
A > B > C > D
b)
A > BC > D (B and C have the same rate)
c)
A > B > CD (C and D have the same rate)
d)
D > C > B > A
11.
Why does a catalyst increase the rate of reaction?
a)
it produces extra energy for the reactants
b)
it increases the speed of the reactant particles
c)
it increases the frequency of particle collisions
d)
it reduces the activation energy of the reaction 
12.
Why don't all collisions between particles cause a reaction?
a)
the particles also need to collide with a catalyst
b)
not all the particles collide with enough energy
c)
not all the particles collide at a high enough temperature
d)
the particles need to collide with each other twice
13.

How could we make this reaction happen more quickly?

a)

Decrease the concentration of the acid

b)

crush the chalk to increase the surface area

c)

Put the test tube in an ice bath

14.

The major theory of reaction rate is called

a)

Collision theory

b)

Crash theory

c)

Newton's laws

d)

Thermodynamics

15.
The following graph shows two different reaction pathways for the same overall reaction at the same temperature. Which pathway is slower and why?
a)
Red, because the activation energy is larger
b)
Blue, because the activation energy is lower
c)
both reaction progress at the same rate
16.
What does NOT happen when the temperature is increased?
a)
Particles collide more often
b)
Particles collide with more energy
c)
Particles move faster
d)
More particles collide in the correct orientation
17.
What makes an effective collision?
a)
When molecules collide.
b)
When molecules collide with the proper orientation.
c)
When molecules collide with proper orientation and enough kinetic energy.
d)
High Temperature.
18.
What is the rate of reaction?
a)
How fast a reaction is 
b)
How big a reaction is
c)
How loud a reaction is
d)
How much gas a reaction produces
19.
Which letter corresponds to the activation energy of the forward reaction?
a)
A
b)
B
c)
C
d)
D
20.

How does concentration affect the rate of reaction?

a)

Increasing concentration increases the rate

b)

Increasing concentration decreases the rate

21.

Why does increasing concentration increase the rate of reaction? Tick all correct options.

a)

There is a lower activation energy

b)

There are more particles in the same volume

c)

There are more frequent collisions

d)

The particles have a higher surface area

22.

How does surface area affect the rate of reaction?

a)

Increasing surface area increases the rate

b)

Increasing concentration decreases the rate

23.

Why does increasing surface area increase the rate of reaction? Tick all correct options.

a)

There is a lower activation energy

b)

There are more particles in the same volume

c)

There are more frequent collisions

d)

The particles have a higher surface area

24.

How does temperature affect the rate of reaction?

a)

Increasing temperature increases the rate

b)

Increasing concentration decreases the rate

25.

Why does increasing temperature increase the rate of reaction? Tick all correct options.

a)

There is a lower activation energy

b)

The particles have higher energy

c)

There are more frequent collisions

d)

The particles have a higher surface area

26.

How do catalysts affect the rate of reaction?

a)

Adding a catalyst increases the rate

b)

Adding a catalyst decreases the rate

27.

This equipment could be used to measure the rate of what type of reaction?

a)

One that produces a gas

b)

One that produces a solid

c)

One that has a colour change

28.

Which of these are the activation energy?

a)

A

b)

B

c)

C

d)

D

29.
In a ___________change, a substance changes into a different substance.
a)
Physical
b)
Chemical
30.
Which of these is NOT a sign that a chemical change has occurred? 
a)

It freezes into a solid.

b)

An unexpected color change

c)

A temperature change

d)

The formation of a precipitate

31.

In a chemical reaction, bonds are broken and new bonds are formed that create new substances. The bonds that are broken are in the ....

?

a)

Reactants

b)

Products

c)

Atoms

d)

Catalysts

32.

Reactions only happen if the reactant molecules collide with enough energy to break the bonds in the reactants

a)

True

b)

False

33.

Heating the reactants causes the partices to move faster so ....

a)

No successful collisions so there is no reaction

b)

Less frequent successful collisions so the reaction is slower

c)

There are more frequent successful colisions so the reaction is faster

d)

More unsuccessful collisions so no reaction

34.

Magnesium ribbon will react slower than magnesium powder when added to dilute hydrochloric acid because ...choose 2 ... the correct answer and reason

a)

So there are less frequent successful co

b)

Mg ribbon has a smaller surface area to volume ratio

c)

So there are more frequent successful collisions

d)

Magnesium powder has a bigger surface area to volume ratio so there will be more frequent successful colisions

35.

If magnesium ribbon and magnesium powder are added to acid which will react slower... chose 2 .... the answer and reason

a)

as the surface area is smaller there will be less successful collisions per second

b)

Magnesium ribbon reacts faster and you will see more bubbles per second

c)

Magnesium ribbon reacts slower

and you will see less

bubbles per second

d)

as the surface area is bigger there will be more successful collisions per

36.

List four factors that affects the rate of a reaction

a)

temperature

b)

concentration

c)

surface area

d)

volume

e)

catalysts

37.

A temperature increase causes the particles ......

a)

to slow down

b)

move faster

c)

collide higher

d)

in the right order

38.

How does a catalyst work in speeding up a reaction?

a)

By lowering the activation energy or reaction

b)

by giving them more energy

c)

by making them more available

39.
A ______________ is a substance that increases the rate of a reaction without being used up during the reaction. 
a)
catalyst
b)
product
c)
reactant
d)
solute
40.

List four factors that affects the rate of a reaction

a)

temperature

b)

concentration

c)

surface area

d)

volume

e)

catalysts

41.

A temperature increase causes the particles ......

a)

to slow down

b)

move faster

c)

collide higher

d)

in the right order

42.

How does a catalyst work in speeding up a reaction?

a)

By lowering the activation energy or reaction

b)

by giving them more energy

c)

by making them more available

43.
The rate of a chemical reaction is NOT affected by which of the following:
a)
temperature
b)
concentration
c)
particle size (surface area)
d)
All of these affect reaction rates
44.
The rate of a reaction increases as temperature__________________.
a)
Decreases
b)
Increases
c)
Stays the Same
45.
Products will form faster if____________
a)
the particle size of the reactants are larger.
b)
temperature is decreased.
c)
concentration of the reactants are increased.
d)
the reaction is not stirred.
46.
A ______________ is a substance that increases the rate of a reaction without being used up during the reaction. 
a)
catalyst
b)
product
c)
reactant
d)
solute
47.
You observe bubbles after adding metal to a solution. Do you assume a chemical reaction took place?
a)
Yes
b)
No
48.
A solution is heated and bubbles form. Do you assume a chemical reaction took place?
a)
Yes
b)
No
49.
Two clear and colorless solutions are combined within a test tube. The result is very cloudy. Do you assume a chemical reaction took place?
a)
Yes
b)
No
50.

A temperature increase causes the particles to ......

a)

to slow down

b)

move faster

c)

collide higher

d)

in the right order

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