7 H End of Unit Test Standard (S)

Name Class Date

1 The table shows the percentage of gases in air.

Gases Percentage
nitrogen 78%
oxygen 21%
all other gases 1%
(a) Give a reason why a pie chart would be a good way to display the information in
the table.

(1)

(b) Name a gas that is part of the 1% of 'other gases'.

(1)

(c) Name one use of nitrogen extracted from air.

(1)

(d) Air is a mixture of gases. Describe the difference between a mixture and a pure
substance.

(1)

(Total for Question 1 = 4 marks)

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 7 H End of Unit Test Standard (S)

2 The elements in the table below are in three groups.

Group 1 Group 2 Liquids Group 3 Gases

copper mercury oxygen
sulfur bromine nitrogen
aluminium

(a) Which name describes the first group of elements in the table? Tick one box.

A metals

B coloured elements

C solids

D non metals

(1)

(b) Which of these elements fits in group 3? Tick one box.

A carbon

B iron

C magnesium

D hydrogen

(1)

(Total for Question 2 = 2 marks)

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 7 H End of Unit Test Standard (S)

3 Use the substances listed in the box below to answer these questions.

carbon dioxide iron nitrogen oxygen silver water

(a) State the substances which are metals.

(1)

(b) State the substances which are compounds.

(1)

(Total for Question 3 = 2 marks)

4 Compounds are formed when elements react together. Give two observations that
would show a chemical reaction is happening.

(Total for Question 4 = 2 marks)

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 7 H End of Unit Test Standard (S)

5 Elements can be represented by symbols. The symbols have been agreed by the
International Union of Pure and Applied Chemistry (IUPAC).
(a) Complete the table below by adding the missing names and symbols.

Element Symbol

hydrogen

copper

Mg

Cl
(2)

(b) Explain an advantage for scientists of using an internationally agreed

system of symbols for elements.

(1)

(Total for Question 5 = 3 marks)

6 Look at the diagrams below. Match the correct diagram to each description.
Write the letter of the diagram in the table.

Description Letter

(a) molecules of an element

(b) molecules of a compound

(c) a mixture of different elements

(d) a mixture of an element and a

compound
(Total for Question 6 = 2 marks)

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 7 H End of Unit Test Standard (S)

7 Calcium oxide is made by heating calcium carbonate strongly for some time.
(a) Write a word equation for this reaction.

(2)

(b) Which name is given to this type of reaction? Tick one box.

A physical reaction

B thermal decomposition

C combustion

D thermal combination

(1)

(c) Name the reactant in this reaction.

(1)

(d) Describe a test that would identify the gas produced in the reaction.

(2)

(Total for Question 7 = 6 marks)

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 7 H End of Unit Test Standard (S)

8 Metals have particular properties that make them useful.

(a) Metals are usually malleable. What does malleable mean? Tick one box.

A stretchy

B can see through it

C can be bent without breaking

D breaks if it bends

(1)

(b) State two properties of copper and aluminium that make them useful for
forming electrical cables.

(2)

(c) State one property shared by the metals iron, nickel and cobalt that other
metals do not have.

(1)

(d) Explain the importance of recycling metals.

(2)

(e) State two properties of non-metals.

(1)

(Total for Question 8 = 7 marks)

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 7 H End of Unit Test Standard (S)

9 Galena is an ore that contains lead sulfide.

(a) State what an ore is.

(1)

(b) Name the two elements found in galena.

(1)

(Total for Question 9 = 2 marks)

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 7 G End of Unit Test Standard (S)

Name Class Date

1 Label each thing solid, liquid or gas. Write your answer below each thing.
(a)
(b) (c)

brick sea water steam

(d) (e) (f)

wood metal milk

(Total for Question 1 = 3 marks)

2 Complete each of the following sentences using one of the words in the box below.

gas liquid solid

(a) A will usually stay in one place and not change shape.
(1)

(b) A can spread out and fill a room. (1)

(Total for Question 2 = 2 marks)

3 Tick the columns in the table Property Solid Liquid Gas

to show the properties of
fixed shape
solids, liquids and gases.
fixed volume
easy to
squash
flows easily
(Total for Question 3 = 3 marks)

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 7 G End of Unit Test Standard (S)

4 In these questions you should use particle theory to explain the properties of water.
(a) When liquid water is moved from one container to another, the water
changes shape to fit the shape of the new container. If solid ice is moved
from one container to another it stays the same shape. Explain why ice and
liquid water respond differently.

(2)

(b) Steam is a gas. Explain why steam can be squashed into a smaller volume.

(2)

(Total for Question 4 = 4 marks)

5 Particle theory states

that all materials are In
Movement of particles In solids In gases
made of particles. liquids
Tick one box in each do not move at all
column of the table to
show the best move very quickly
description for how the vibrate at fixed points
particles move in solids,
liquids and gases. vibrate and can
move past one
another
(Total for Question 5 = 2 marks)
6 Draw diagrams in the boxes below to show how the particles are arranged in
solids, liquids and gases, as described in the particle theory.
Use the shape O to represent one particle.

Solid Liquid Gas

(Total for Question 6 = 3 marks)

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 7 G End of Unit Test Standard (S)

7 Petrol is a liquid. When someone

fills the petrol tank of a car, petrol
flows through a pipe into the tank.

(a) If a car uses a solid fuel, such as coal, the petrol tank cannot be filled up using
a pipe. Give a reason for this. Tick one box.

A Coal burns too slowly.

B Coal would scratch the car.

C Solids cannot flow through a pipe.

D Solid particles are too close together.

(1)

(b) Some car engines use a gas as fuel.

State one problem someone would have if they wanted to fill a fuel tank with a
gas.

(1)

(Total for Question 7 = 2 marks)

8 (a) How do the air particles inside a car tyre cause pressure on the inside of the
tyre? Tick one
box.

A The air particles bounce off each other.

B The air particles are a long way apart.

C The air particles are moving very fast.

D The air particles hit the side of the tyre.

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 7 G End of Unit Test Standard (S)

(1)

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 7 G End of Unit Test Standard (S)

(b) A driver pumps up the tyres of her car. Describe what happens to the
pressure inside the tyres.

(1)

(Total for Question 8 = 2 marks)

9 You are watching TV and you can smell food cooking. The smell has spread by
diffusion.
(a) Use particle theory to explain why diffusion happens.

(1)
(b) Use particle theory to explain why diffusion does not happen in solids.

(1)
(c) Does diffusion happen faster in a liquid or a gas? Tick one box.

A In a gas, because particles in a gas move faster than

particles in a liquid.

B In a gas, because particles in a liquid move faster than

particles in a gas.

C In a liquid, because particles in a liquid move faster

than particles in a gas.

D In a liquid, because particles in a gas move faster than

particles in a liquid.

(1)

(Total for Question 9 = 3 marks)

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 7 G End of Unit Test Standard (S)

10 A vacuum pump is attached to a metal

can, as shown in the diagram.
The pump is switched on to remove the
air from inside the can.
After the pump has been switched on for a
few seconds, the can is suddenly squashed
and crushed in.

(a) What is the meaning of the word ‘vacuum’? Tick one box.

A A space which contains only air.

B A space which contains no particles.

C A space which contains no air.

D A space which contains only very small particles.

(1)

(b) Give a reason why the can suddenly squashed and crushed in when the air
inside it was removed.

(1)

(Total for Question 10 = 2 marks)

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 7 G End of Unit Test Standard (S)

11 In 1827, Robert Brown saw random movements of pollen grains in water under a
microscope.
He thought the movements were because the pollen grains were alive.
To check, he repeated the experiment with 100-year-old ‘dead’ pollen grains. He
saw the same movements.
The same random movements happened when small specks of soot were mixed
with water and with smoke. The movements are now called Brownian motion.
(a) What was Robert Brown’s first hypothesis about the movements of the pollen
grains? Tick
one box.

A The movement was random.

B Waves in the water moved the pollen grains.

C The pollen grains absorbed light energy.

D The pollen grains were alive.

(1)

(b) How did he test his hypothesis? Tick one box.

A He repeated the experiment using 100-year-old

(dead) pollen grains.

B He repeated the experiment using small specks of

soot mixed with water.

C He repeated the experiment using smoke.

D He repeated the experiment using the same pollen grains.

(1)

(c) Explain Brownian motion using the particle theory of matter.

(2)

(Total for Question 11 = 4 marks)

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 7 I End of Unit Test

Name Class Date

1 (a) Which fuel is used for cooking in an oven? Tick one box.

A water

B petrol

C diesel

D natural gas

(1)
(b) Which fuel is stored in tanks and used in cars? Tick
one box.

A wood

B petrol

C coal

D water
(1)

(Total for Question 1 = 2 marks)

2 (a) How long ago were fossil fuels formed? Tick one box.

A tens of years

B hundreds of years

C thousands of years

D millions of years

(1)

(b) Name one fuel that is not a fossil fuel.

(1)
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 7 I End of Unit Test

(Total for Question 2 = 2 marks)

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 7 I End of Unit Test

3 A student burns different fuels. This is the apparatus she uses.

(a) Label the diagram.

(2)

(b) What is the student investigating? Tick one

box.

A which fuel is the heaviest

B which fuel makes the water boil

C which fuel makes the water the

hottest

D which fuel heats the water the (1)

quickest

(c) Write down two variables the student should keep the same to make sure her
test is fair.

(i) (1)

(ii) (1)

(d) The table shows some of the student’s results. Calculate the temperature rise
per gram for each fuel and complete the final column.

Temperature rise in Temperature rise per

Fuel Mass of fuel burnt (g)
water (°C) gram of fuel (°C/g)
paraffin 0.9 10
ethanol 1.6 11.5

(1)
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 7 I End of Unit Test

(e) The student’s teacher calculates the energy stored in 0.9 g of paraffin is
enough to raise the temperature of the water much more than 10 °C. Explain
why the student did not get a bigger temperature rise.

(2)

(Total for Question 3 = 8 marks)

4 Energy can be stored in different forms.

(a) Name the form of energy stored in food and fuels.

(1)

(b) The drawing shows two toy cars on a ramp.

(i) Which form of energy is car A storing? Tick one box.

A kinetic energy

B light energy

C sound energy

D gravitational potential energy

(1)

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 7 I End of Unit Test

(ii) Which form of energy is car B storing? Tick

one box.

A kinetic energy

B light energy

C sound energy

D gravitational potential energy

(1)

(Total for Question 4 = 3 marks)

5 (a) These sentences describe how oil and natural gas were formed, but the
sentences are in the wrong order. Write the letters of the following
sentences in the correct order.
A More layers of sand and mud covered the plants and animals and squashed
them.
B The plants and animals were covered in mud and sand.
C Tiny animals and plants died and fell to the bottom of the sea.
D Heat and pressure turned the plants and animals into oil and natural gas.

(1)

(b) Coal and some biofuels are made from plants. Explain why coal is non-
renewable but biofuels are renewable.

(2)

(c) Climate change could cause floods and starvation in different parts
of the world. Explain how burning fossil fuels could cause climate
change.

(2)

(Total for Question 5 = 5 marks)

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 7 I End of Unit Test

6 The energy in fossil fuels and in many kinds of renewable energy resources
originally came from the Sun.
(a) Name two energy resources that do not come from the Sun’s energy.

(2)

(b) Electricity can be generated using the up and down movement of waves
on the sea. Explain how the energy in waves originally came from the
Sun.

(2)

(Total for Question 6 = 4 marks)

7 The table shows the nutritional information from a pre-packed chicken tikka masala
meal.

Typical values per pack (425 g)

Energy 2536 kJ / 605 kcal
Protein 33.7 g
Carbohydrate 56.4 g
(of which (11.5 g)
sugar)
Fat 25.2 g
(of which saturated) (10.7 g)
Fibre 9.0 g
Sodium 2.0 g
(a) State one substance named in the left column of the table that gives us energy.

(1)

(b) Calculate the energy in a 100 g portion of the meal. Give your answer in
kilojoules.

(2)

(c) The meal is suggested for one adult or shared between two children. Give
one reason for this advice.

(1)

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 7 I End of Unit Test

(Total for Question 7 = 4 marks)

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 7 I End of Unit Test

8 Some people are building a house. The house is not connected to the electricity
grid but is next to a small river. The river is always flowing and never dries up.
The weather is often windy.

The people have this information about different forms of renewable energy.

Energy transferred per second

Resource Cost
when working (J)
small hydroelectric generator 5000 £25 000
wind turbine 5000 £17 000
solar cells 5000 £7000

Explain which resource, or resources, they should use for their house.

(Total for Question 8 = 2 marks)

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 7 A End of Unit Test Higher (H)

Name Class Date

1 Name the four organs labelled on the diagram.

(Total for Question 1 = 2 marks)

2 (a) Name the life process the urinary system helps the body with.

(1)

(b) Describe the job of one named organ in the urinary system.

(2)

(Total for Question 2 = 3 marks)

3 (a) Name the human organ system that carries substances round the body.

(1)

(b) Describe how this organ system supports the life process of respiration.

(1)

(Total for Question 3 = 2 marks)

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 7 A End of Unit Test Higher (H)

4 Food is broken down inside your body.

(a) Which organ system is used to break down food? Tick one box.

A respiratory system

B digestive system

C circulatory system

D excretory system

(1)

(b) Name the part of the body where food is absorbed into the blood.

(1)

(c) Fibre is a type of food that is not taken into the blood. Name, in order, all the
structures on the route fibre takes through the body after the mouth.

(2)

(Total for Question 4 = 4 marks)

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 7 A End of Unit Test Higher (H)

5 (a) Name, in order, the organs water passes through when travelling through a plant.

(1)

(b) Water travels through specialised cells called xylem cells. Give the general
name we use for a group of cells that work together to do the same job.

(1)

(c) Name one other specialised plant cell and describe its function.

Name:

Function:
(2)

(d) (i) Name one part of the cell in part (c) that is found in all plant and animal cells.

Name:
(1)

(ii) Give the function of this part of a cell.

Function:
(1)

(e) What equipment would you use to observe cells? Tick one box.

A microphone

B stop clock

C microscope

D test tube

(1)

(Total for Question 5 = 7 marks)

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 7 A End of Unit Test Higher (H)

6 (a) What will the total magnification of a microscope be if a 5 lens is used

with a 10 lens? Tick one box.

A 2

B 5

C 15

D 50

(1)

(b) Explain why a specimen must be cut very thinly for viewing under a light
microscope.

(1)

(c) Explain why a stain is sometimes used when preparing tissue for viewing
under a light microscope.

(1)

(Total for Question 6 = 3 marks)

7 Sheep are mammals, like humans. Use your knowledge of human organ
systems to describe how a sheep's body gets rid of waste materials from its
blood.

(Total for Question 7 = 3 marks)

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 7 A End of Unit Test Higher (H)

8 What process happens in chloroplasts? Tick one box.

A digestion

B respiration

C reproduction

D photosynthesis

(Total for Question 8 = 1 mark)

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