© cambridge university press 2003, 2006, 2008 7h multiple-choice main test 1 year 7 multiple-choice...

© Cambridge University Press 2003, 2006, 2008

7H multiple-choice main test

1

Year 7 multiple-choicemain test

7H Solutions

For each question circle the correct answer.



2

Question 1

The only type of water that is pure is...

A) distilled water

B) mineral water

C) tap water

D) sea water



3

Question 2

Sugar dissolves in water because it is...

A) insoluble

B) saturated

C) solid

D) soluble



4

Question 3A pupil mixed the following solids into water and stirred until nothing else happened.

Choose the mixture A B C or D that cannot be separated using filtration.



5

Question 4

A solid can be separated from a solution using...

A) condensation

B) evaporation

C) freezing

D) melting



6

Question 5

The chemical name for ‘common salt’ is...

A) calcium carbonate

B) copper sulfate

C) potassium nitrate

D) sodium chloride



7

Question 6The flow diagram shows how a pupil extracted pure, dry salt from rock salt.

Choose the word that completes the flow diagram.A) condensationB) distillationC) evaporationD) freezing



8

Question 7

A pupil extracted 3 g of pure, dry salt from 5 g of rock salt. The mass of salt obtained was less than the mass of rock salt because the rock was removed by...

A) dissolving

B) distillation

C) evaporation

D) filtration



9

Question 8A pupil made a salt solution using the following amounts of salt and water.

The mass of the solution formed was...A) 4 gB) 6 gC) 10 gD) 16 g



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Question 9

In a salt solution the particles of salt and water are...

A) combined

B) in rows

C) intermingled

D) spread out



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Question 10

This method of separation is called...A) condensationB) distillationC) evaporationD) fractionation



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Question 11

The piece of equipment labelled X is called...A) a condensation tubeB) a condenserC) an evaporatorD) a round-bottomed flask



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Question 12

The boiling point of the pure water produced is...A) 0 °CB) 50 °CC) 100 °CD) 150 °C



14

Question 13

A mixture of different coloured inks can be separated using...

A) chromatography

B) distillation

C) evaporation

D) filtration



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Question 14A spot of black ink was placed on a strip of filter paper. The end of the filter paper was placed in water and left. This is the result.

Choose the pigment A B C or D that is the most soluble in water.



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Question 15

Ink X is a mixture of colours...A) 1 and 2B) 1 and 3C) 2 and 4D) 3 and 4



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Question 16

A solution where no more solid will dissolve is called...

A) insoluble

B) saturated

C) solubility

D) soluble



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Question 17

A pupil slowly mixes salt into 25 cm3 of water until no more will dissolve. The pupil could make more salt dissolve in the solution by...

A) cooling it

B) evaporating it

C) heating it

D) stirring it



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Question 18The table shows the solubility of four different solids at 20 °C.

Choose the solid A B C or D that has the highest solubility.



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Question 19

Gravel is insoluble in water. The solubility of gravel in 100 g of water at 20 °C is...

A) 0 g

B) 20 g

C) 100 g

D) 120 g



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Question 20The table shows the solubility of lead nitrate at different temperatures.

As temperature increases the solubility of lead nitrate...A) decreasesB) becomes zeroC) increasesD) stays the same