John Buchan Middle School 1

John Buchan Middle School

Science Test Revision

4D Solids, Liquids and Separation

29 min

27 marks

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1. Sweets

(a) Alisha and Peter have some small sweets.

Peter puts one on his tongue.

Peter made a plan to test his idea that the sweet dissolves.

How long did Peter plan to leave the sweet in water?

....................................................hours 1 mark

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(b) Peter took photographs of the sweet in the beaker at the beginning and the end of his investigation.

What part of his plan did Peter change when he carried out the investigation?

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....................................................................................................................... 1 mark

(c) Look at the photographs A and B.

Use the evidence in photographs A and B to write a conclusion for Peter’s investigation.

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....................................................................................................................... 1 mark

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(d) Alisha made a plan to test her idea that the sweet melts rather than dissolves.

Where should Alisha put her sweet to test her idea that it melts?

Tick ONE box.

a cold place a hot place

a dry place a wet place

1 mark

2. Solids, liquids and gases

(a) Kenny writes 5 statements about materials.

How has Kenny collected this information?

Tick ONE box.

by fair testing by observing

by measuring by modelling

1 mark

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(b) Some of Kenny’s friends describe their ideas about solids, liquids and gases.

Which of Kenny’s statements can be used to argue against Sally’s idea?

Tick ONE box.

A B C D E

1 mark

(c)

Which of Kenny’s statements can be used to support Jo’s idea?

Tick ONE box.

A B C D E

1 mark

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(d)

Look at Paul’s idea and Kenny’s statements.

(i) Do you agree with Paul’s idea?

Tick ONE box.

Agree Do not agree

(ii) Explain your reasoning.

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............................................................................................................. 1 mark

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3. Solids, liquids and gases

(a) Lorna has a bottle of nail varnish.

Write solid, liquid or gas to label each part of the diagram.

1 mark

(b) Lorna stands at the front of the classroom. She takes the lid off the nail varnish bottle.

The table below shows the time it took for the smell of the varnish to reach different children.

Child Time taken to smell varnish (seconds)

A 20

B 5

C 12

Complete the diagram below by writing A, B or C on each line to show the position of each child.

Lorna with

nail varnish …………… …………… …………… 1 mark

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(c) Water can be a solid, a liquid or a gas.

Draw THREE lines to match the name given to water when it is a solid, a liquid and a gas.

ice

water

water vapour

solid

liquid

gas

1 mark

(d) Answer the questions in the table by ticking the correct box in each row.

Question Solid Liquid Gas

Which forms during evaporation?

Which keeps its own shape?

Which forms during condensation?

Which spreads out to fill any sized container?

2 marks

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4. Separating materials

(a) Hannah mixes sand and water together. The mixture can be separated using the equipment below.

What name is given to this method of separating?

...................................................................................................................... 1 mark

(b) Explain why sand can be separated from water using this method.

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...................................................................................................................... 1 mark

(c) Hannah wants to separate some different mixtures.

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Complete the table below to show how Hannah could separate each mixture quickly.

Mixture Method of separating

How is the mixture separated?

sugar and water

flour and rice

...................................

The flour .................................................

................................................................

The rice ..................................................

................................................................

steel nails and brass screws

...................................

The steel nails ........................................

................................................................

The brass screws ....................................

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4 marks

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5. Pebbles, salt and sand

(a) Joanne has a dry mixture of pebbles, salt and sand.

She has these four pieces of equipment to help her separate the mixture.

Which piece of equipment from the box above should Joanne use to separate the pebbles from her mixture?

...................................................................................................................... 1 mark

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(b) Which TWO pieces of equipment from the box should she use to separate the salt from the sand?

..................................................... and ....................................................... 1 mark

(c) Joanne uses these two things and some other equipment to separate the salt from the sand.

When she finishes, she has salt crystals in one container and sand in another container.

salt crystals sand

Explain fully how Joanne separated the salt and sand mixture, so that she finished with salt crystals in one container and sand in another container.

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...................................................................................................................... 2 marks

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6. Ice lollies

(a) Some children are making ice lollies.

The children cool the liquid. It changes into ice.

Before cooling: After cooling:

liquid

solid

Name the process that takes place when a liquid changes to a solid.

...................................................................................................................... 1 mark

(b) Which TWO statements below show that an ice lolly is a solid?

Tick TWO boxes.

It has a fixed shape.

It is slippery.

It is cold.

It is cloudy.

It cannot be poured.

1 mark

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(c) The children make ice lollies of different sizes.

They time how long the lollies take to melt.

Here are their results.

Volume of lolly

(cm3)

Time taken to melt (minutes)

30 200

40 230

50 255

60 275

70 295

Describe the link between the volume of the lolly and the time it takes to melt.

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...................................................................................................................... 2 marks