1. It is possible to identify a substance from looking at its properties.
Here are some properties of six substances.
a. Which two substances could be steel? Choose from A, B, C, D, E or F.
……………………. and ……………………..
Explain your answer.
…………………….…………………….…………………….…………………….
b. One of the substance is water. Which substance? Choose from A, B, C, D,
E or F.
…………………….
c. The temperature in a laboratory is 25C. Which substance is a gas in this
laboratory? Choose from A, B, C, D, E or F.
…………………….
d. Substance D melts at 1535C.
What happens when a substance melts?
…………………….…………………….…………………….………………
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2. Yuri investigates how much salt dissolves in water.
He predicts that the hotter the water, the more salt will dissolve. Here are
his results.
a. Yuri forgets to put the unit for mass in the table.
What is the unit for mass?
…………………….…………………….…………………….………………
b. Yuri uses 100 cm3 of water for each temperature of water. Explain why.
…………………….…………………….…………………….………………
…………………….…………………….…………………….………………
c. Yuri’s friend suggests he repeat the experiment.
Why is this a sensible suggestion?
…………………….…………………….…………………….………………
…………………….…………………….…………………….………………
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d. Yuri predicted that the hotter the water, the more salt would dissolve.
Do Yuri’s results agree with his prediction?
…………………….…………………….…………………….………………
Explain your answer using information from the results table.
…………………….…………………….…………………….………………
…………………….…………………….…………………….………………
e. Yuri decides to present his results.
Which would be the best way? Circle the correct answer.
a pie chart
a bar chart
a line graph
a labelled diagram
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3.
a. Chen writes some sentences about forces.
Only one sentence is correct. Tick into the correct sentence.
Force is also called mass.
Force is measured in kg.
Force is measured in m.
Forces do not stop objects moving.
Forces have direction.
b. Chen goes skateboarding.
There is friction between the ground and the wheels.
Describe how he can increase the friction between the ground and the
wheels.
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4. Here are some properties of four substances.
a. Buckets are used to carry water.
Which material could not be used to make a bucket?
Choose from A, B, C or D.
…………………….……
Explain your answer.
…………………….…………………….…………………….………………
…………………….…………………….…………………….………………
b. Substance A is used to make cars.
Explain why.
Use information from the table.
…………………….…………………….…………………….………………
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5. A mirror ball is shiny.
It is made of many small mirrors.
Complete the sentences.
Light hits the surface of the mirror ball. The light is then …………………….
The light changes …………………….……
We see the light because it enters our …………………….……………
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6. Mia and Safia are carrying out an investigation.
They use a mass attached to string.
a. Before Mia starts the investigation she says
‘If I pull the mass further towards me
it will take a longer time to swing to Safia.’
What type of statement is this?
Circle the correct answer.
Conclusion
data
evidence
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prediction
results
b. What measuring apparatus will they need to test this?
Tick the correct two answers.
c. Mia and Safia want the investigation to be a fair test.
Write down one factor they keep the same.
…………………….………………………………….…………………………
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7. Jamila dissolves salt in water to make salt water.
a. The water in Jamila’s experiment is a solvent.
What is the meaning of the word solvent?
…………………….………………………………….…………………………
…………………….………………………………….…………………………
b. Salt is a soluble substance.
What is the meaning of the word soluble?
…………………….………………………………….…………………………
…………………….………………………………….…………………………
c. Salt water is an example of a solution.
What is the meaning of the word solution?
…………………….………………………………….…………………………
…………………….………………………………….…………………………
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8. Chen finds information about different planets.
He writes down the time it takes for each planet to spin once.
a. Which planet takes the least number of hours to spin once?
…………………….………………………………….……………………
b. One of the planets is Earth.
Which planet is Earth?
Circle the correct answer.
A
B
C
D
E
c. How many planets take longer to spin once than planet C?
Circle the correct answer.
0
1
2
d. Look at the picture of the Earth.
Describe what it is like at part X and Y.
At X it is …………………….…………
At Y it is …………………….…………
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3
4
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9. Here is an outline of a human.
a. Which organ has a position in area B?
Circle the correct answer.
brain
intestine
liver
lung
stomach
lung
stomach
b. Which organ has a position in area D?
Circle the correct answer.
brain
intestine
liver
c. In which area would you find the heart?
Circle the correct answer.
A
B
C
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D
10.
Mia investigates electrical conductors.
She puts different materials in an electrical circuit.
a. The symbol for the cell is
Draw the symbol for the lamp.
b. Some materials are good conductors of electricity.
What happens to the lamp if the material is a good conductor of electricity?
…………………….………………………………….……………………………
…………………….………………………………….……………………………
c. Which material is a good conductor of electricity?
Circle the correct answer.
paper
plastic
rubber
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silver
wood
11.
The picture shows the position of the heart in the body.
a. What is the function of the heart?
…………………….………………………………….……………………
…………………….………………………………….……………………
b. The heart is made of muscle.
What are the ribs made of?
…………………….………………………………….……………………
c. The ribs protect the heart.
Write down the name of one other organ protected by the ribs.
…………………….………………………………….……………………
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12.
Look at this electrical circuit.
Why does this electrical circuit not work?
Tick one box.
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13.
Mike has a heart that does not work.
He uses a heart machine.
Mike must use the heart machine to stay alive.
a. Explain what the heart machine does.
…………………….………………………………….………………………..
…………………….………………………………….………………………..
…………………….………………………………….………………………..
b. Mike takes the extra heart machine with him when he goes outside.
Explain why Mike needs an extra heart machine.
…………………….………………………………….………………………..
…………………….………………………………….………………………..
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14.
Each body system in humans contains a major organ.
Complete the table to show the major organs in some body systems.
One has been done for you.
15.
The diagram shows some organs of body
Each organ in the body has a job to do.
Write the letter of the organ next to its job in the
table.
Job
Control the body’s
actions
Digests food
Exchanges gases
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Organ