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Recall Chemistry 2 AQA

Total questions: 39

Worksheet time: 59mins

Name
Class
Date
1.

Which of these is a way to speed up the rate of reaction?

a)

Increase Temperature

b)

decrease concentration

c)

add more stuff

d)

Decrease Surface area

2.

Granules of substance have a _____ surface area

a)

larger

b)

smaller

c)

the same

3.
What is a catalyst? Choose 2
a)
Something which decreases the rate of a reaction
b)
It is used up
c)
Something which increases the rate of a reaction
d)
It is not used up
4.

A faster reaction can be shown on a graph using?

a)

A shallow line

b)

A steeper line

c)

A flat line

d)

using a bar chart

5.

A faster reaction means?

a)

Less frequent collisions

b)

More frequent collisions

c)

An explosion happens

d)

Something else

6.

Particles must (a)   in order for a reaction to happen


a)

collide

b)

dance

c)

explode

d)

touch

7.

Rate of reaction=

a)

Amount of stuff made/time

b)

time/amount of stuff

c)

stuff at the start/stuff at the end

d)

time x stuff made

8.

A reversible reaction is?

a)

Use this symbol (drawn on the board)

b)

Go in 1 direction only

c)

One where the reactants make the products and the products make the reactants

d)

can only happen backwards

9.

A Hydrocarbon is?

a)

Has only Carbon

b)

Has oxygen in

c)

Is made of water

d)

Made of Hydrogen and Carbon only

10.

Complete Combustion makes ​_____ and _____

a)

Carbon Dioxide

b)

Water

c)

Hydrogen

d)

fuel

e)

oxygen

11.

Incomplete Combustion makes

a)

Water

b)

Carbon

c)

Carbon Monoxide

d)

Carbon Dioxide

12.

Crude oil is what kind of resource

a)

Renewable

b)

Non renewable

c)

Finite

d)

Synthetic

13.

Crude oil is made up of?

a)

Tarantulas

b)

Smoke

c)

Ancient biomass on the sea bed

d)

Rocks

14.

What can we find out from chromotography?

a)

Whether its synthetic or natural?

b)

How soluble something is?

c)

If its pure or impure?

d)

Where something came from

15.

I have a chromatograph. I have 3 substances. The one that is the most soluable will travel

a)

It stays still

b)

The shortest distance

c)

The longest distance

d)

The middlest distance?

16.

Test for Chlorine?

a)

Bleaches Litmus paper

b)

Relights a splint

c)

Turns lime water cloudy

d)

Squeaky pop

17.

Test for Oxygen?

a)

Bleaches Litmus paper

b)

Relights a splint

c)

Turns lime water cloudy

d)

Squeaky pop

18.

Test for carbon dioxide?

a)

Bleaches Litmus paper

b)

Relights a splint

c)

Turns lime water cloudy

d)

Squeaky pop

19.

Test for hydrogen?

a)

Bleaches Litmus paper

b)

Relights a splint

c)

Turns lime water cloudy

d)

Squeaky pop

20.

Which of these is the right formula for carbon dioxide

a)

CO2CO_2

b)

co2co^2

c)

CO

d)

CO2CO^2

21.

What is the most common gas in earth's atmosphere

a)

Carbon dixide

b)

Nitrogen

c)

Oxygen

d)

Helium

22.

The current proportion of gases is approximately

a)

20% nitrogen, 80% oxygen and small proportions of various other gases.

b)

80% nitrogen, 20% oxygen and small proportions of various other gases.

c)

70% nitrogen, 30% oxygen and small proportions of various other gases.

d)

30% nitrogen, 70% oxygen and small proportions of various other gases.

23.

For the last ............. .......... ........... the proportion of gases in the atmosphere has been much the same

a)

200 million years

b)

800 million years

c)

1 billion years

d)

200 billion years

24.

The Early atmosphere of Earth was similar to that of ................... .... .............. today

a)

Mars and Venus

b)

Neptune and Mercury

c)

Uranus and Mars

d)

Venus and Jupiter

25.

Early Earth had a load of ____ which put loads of nitrogen in the atmosphere

a)

Volcanoes

b)

Ice cream

c)

dinosaurs

d)

Plants

26.

Early earths atmosphere was mostly?

a)

Nitrogen

b)

Oxygen

c)

Carbon dioxide

d)

Hydrogen

27.

Early Earth's atmosphere had loads of ____ which cooled to form our oceans?

a)

Carbon

b)

Water vapour

c)

Oxygen

d)

Sulphur

28.

Plants reduced Carbon dioxide levels in the atmosphere by carrying out which process?

a)

Condeensation

b)

Respiration

c)

Liquidation

d)

Photosynthesis

29.

Photosynthesis in plants makes this gas?

a)

Oxygen

b)

Carbon dioxide

c)

water

d)

helium

30.

Carbon dioxide, water vapour and methane are known as?

a)

climate change

b)

The hot heads

c)

gas giants

d)

The greenhouse gases

31.

Some possible consequences of having too much Carbon dioxide in the atmosphere?

a)

Ice caps melting- causing flooding

b)

Droughts and other extreme weather

c)

Habitat loss

d)

Less farmland

32.

A finite resource will

a)

Last forever

b)

will never run out

c)

will run out

d)

are renewable

33.

this is a renewable resource

a)

Gas

b)

Oil

c)

Coal

d)

Wind

34.
In paper chromatography, what is the mobile phase?
a)
Pencil line
b)
Paper
c)
Ink
d)
Solvent e.g. water
35.

A non renewable resource

a)

Biofuel

b)

Coal

c)

Solar

d)

Tidal

36.

Potable water is

a)

pH 10

b)

pure water

c)

Unsafe to drink

d)

Safe to drink

37.

Potable water is

a)

Pure

b)

Impure

c)

toxic

d)

formulation

38.

First step in fresh water treatment

a)

Sterilisation

b)

Irradiation

c)

Filtration

d)

vapourisation

39.

Sterilisation is the second step of sewage treatment. What does it do?

a)

Removes soluable solids

b)

Makes it taste better

c)

Removes insoluable solids

d)

Kills pathogens

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