q1.€€€€€€€€€ the drawings show the amounts of different

Q1. The drawings show the amounts of different substances in 100 g of full-cream milk and 100 g of skimmed milk.

(a) Use the information in the drawings to complete the sentence.

When skimmed milk is made from full-cream milk, most of the

............................................ is taken out. 1 mark

(b) (i) Look at the drawings. Which substance in milk do we need for strong bones and teeth?

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

(ii) How are substances carried around the body?

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

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(c) (i) Which animals produce milk to feed their young? Tick the correct box.

amphibians birds

mammals reptiles1 mark

(ii) A baby fed on its mother’s milk gets fewer infections. What is the reason for this? Tick the correct box.

The milk contains antibodies.

The milk contains water.

The milk is at body temperature.

The milk is a liquid. 1 mark

maximum 5 marks

Q2. Carbohydrate, fat and protein are three types of nutrient.

(a) Give the names of two other types of nutrient needed for a balanced diet.

1. .................................................................................................................

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

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A balanced diet contains a variety of foods. Some food groups are shown in the table. They are labelled A to D.

(b) Which food group contains the highest percentage of the nutrient used by the body for growth and repair?

Tick the correct box.

1 mark

(c) Fibre is not digested but helps the digestion process. Which food group contains the most fibre?


1 mark

(d) Use the information in the table to suggest why milk is better for babies than ice-cream.

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

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

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(e) 100 g of dried coconut has more energy stored in it than an equal mass of dried potato.

Give the reason for this.

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

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

Maximum 6 marks

Q3. Table 1 gives information about 100 g of five different foods.

table 1

food energy

per 100 g nutrients per 100 g of each food

of food

(kJ) protein

(g) fat (g)

carbohydrate (g)

calcium (mg)

banana 403 1.2 0.3 23.2 6

wholemeal bread 914 9.2 2.5 41.6 54

butter 3031 0.5 81.7 0 15

cheese 1708 22.5 34.4 0.1 720

milk 275 3.2 3.9 4.8 115

(a) Look at table 1.

(i) Which of the four nutrients, protein, fat, carbohydrate or calcium, provides most of the energy in the cheese?

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

(ii) Which of the four nutrients provides most of the energy in the wholemeal bread?

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

(iii) Which of the four nutrients is needed for growth and repair?

................................................................................................................ 3 marks

(b) The recommended daily amount of protein for a woman is 45 g. Look at table 1. How many grams of cheese would provide 45 g of protein? Tick the correct box.

1 mark

50 g 100 g 150 g 200 g

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(c) Not all the types of nutrients needed for a balanced diet are shown in table 1.

Give the name of one of the missing types of nutrient.

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

(d) Table 2 shows the recommended daily amount of calcium for a person in four stages of the human life cycle. We need calcium for healthy teeth and bones.

table 2

person recommended daily amount

of calcium (mg)

a baby aged 6 months 600

a woman before she is pregnant 500

a pregnant woman 1200

a breast-feeding woman

(i) Use information in table 2 to estimate how much calcium a breast-feeding woman should have each day.

............. mg

(ii) Explain why she would need this amount of calcium.

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

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

maximum 7 marks

Q4. (a) Pineapple juice contains a substance that speeds up the digestion of protein.

(i) What is the name for substances that speed up digestion?

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

(ii) What happens to a molecule of protein during digestion?

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

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

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(b) Asim did an experiment to investigate the digestion of gelatin. Gelatin is the protein in jelly. In test tubes A and B he used one cube of jelly in each. In test tube C he used one cube of jelly that he had chopped up.

A B C 5 g jelly cube 5 g jelly cube 5 g jelly cube + + chopped into

15 cm3 15 cm3 fresh pieces

cold water pineapple + juice 15 cm3 fresh pineapple juice

He recorded how long it took for the jelly to be digested in each test tube. The table below shows his results.

test tube result

A not digested after 2 hours

B jelly digested in 2 hours

C jelly digested in 1 hour

(i) What was the purpose of test tube A?

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

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

(ii) It is helpful to chew your food. How do the results in test tube C show this?

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

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

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(c) The substances that speed up digestion stop working when they have been boiled.

(i) What does Asim need to put in a fourth test tube to test this in his experiment? Label test tube D. Test tubes A, B and C contain the same as in the first experiment.

A B C D 5 g jelly 5 g jelly cube 5 g jelly cube ............................ cube + chopped into

+ 15 cm3 fresh pieces ............................

15 cm3 pineapple + +

cold water juice 15 cm3 fresh

pineapple ............................ ............................ ............................

2 marks

(ii) Predict what Asim would observe in test tube D after 2 hours.

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

maximum 7 marks

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Q5. (a) The drawings below show three objects made from copper.

Draw a line from each object to the reason for using copper for that object. Draw only three lines.

3 marks

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(b) Brass is a mixture of copper and zinc. Some keys are made from brass

Why is brass more suitable than copper for a key? Tick the two correct boxes.

2 marks

Brass does not bend as easily as copper.

Brass is a paler colour than copper.

Brass is harder than copper.

Brass is not as shiny as copper.

Brass is not such a good conductor of electricity as copper.

Brass is not such a good conductor of heat as copper.

(c) Zinc melts at 420°C.

Copper melts at 1085°C.

A scientist heated a mixture of pieces of zinc and pieces of copper to 600°C in a dish.

What would be in the dish at 600°C?

1 mark maximum 6 marks

liquid zinc and liquid copper

liquid zinc and solid copper

solid zinc and liquid copper

solid zinc and solid copper

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Q6. Krypton is an element which is a non-metal. Tungsten is an element which is a metal.

(a) The lines show one property of krypton and one property of tungsten. Draw two more lines from each element to its other properties.

4 marks

(b) The diagram shows a light bulb.

Give two properties which make tungsten a good material for light bulb filaments. Choose from the list of properties above.

1. ..................................................................................................................

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

Maximum 6 marks

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Q7. An alloy is a mixture of elements. The table shows the mass of each element present in 100 g of five different alloys, bronze, solder, steel, stainless steel and brass.

mass of each element in 100 g of alloy

alloy lead (g)

tin (g)

copper (g)

zinc (g)

carbon (g)

iron (g)

chromium (g)

nickel (g)

bronze 4 95 1

solder 62 38

steel 1 99

stainless steel

70 20 10

brass 67 33

(a) Which alloy in the table above contains an element which is a non-metal?

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

(b) Which two alloys in the table contain only two metals?

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

(c) Another alloy called nichrome contains only the elements chromium and nickel. 100 g of nichrome contains 20 g of chromium.

How much nickel does it contain?

……… g 1 mark

(d) Before 1992, two-pence coins were made of bronze. Steel rusts but bronze does not rust.

(i) Why does bronze not rust? Use information in the table above to help you.

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

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

(ii) Rusting requires water and a gas from the air. Give the name of this gas.

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

maximum 5 marks

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Q8. A science teacher showed her class three experiments, A, B and C. The experiments and the word equations for the reactions that took place are shown below. All the experiments were done in a fume cupboard.

(a) From the substances in experiments A, B and C, above, give the name of:

(i) one metallic element;

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

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(ii) one non-metallic element;

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

(iii) two compounds.

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

(b) In experiment B, the iron filings weighed 2.0 g at the beginning of the experiment and the iron sulphide produced weighed 2.8 g.

Explain this increase in mass.

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

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

(c) Complete the word equation for the chemical reaction in experiment C.

copper + chlorine ? ............................................................. 1 mark

maximum 5 marks

Q9. Magnesium burns in air giving a very bright light.

(a) Complete the word equation below to show this reaction.

magnesium + ............................................. → ........................................... 1 mark

The diagram shows four gas-jars. Each contains a different gas. Burning magnesium is put into each jar.

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(b) In one of the gas-jars, the magnesium goes out immediately. Name the gas in this jar.

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

Explain your answer.

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

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

Maximum 3 marks

Q10. (a) Draw a line from each change of state to the correct name. Draw only four lines.

3 marks

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(b) Kate made some ice cubes from pure water. She used a sensor to measure the temperature of the ice.

What temperature will the sensor show when the ice is melting?

............. °C 1 mark

(c) Kate made some more ice cubes from salt solutions. She used a different amount of salt in each ice cube.

The table shows the temperature at which the ice cubes melted.

Look at the table above. As the mass of salt increased, what happened to the temperature at which the ice cube melted?

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

mass of salt in each ice cube (g)

temperature ice cube melted (°C)

5 −4

10 −8

15 −11

20 −15

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(d) In very cold weather a mixture of salt and sand is spread on roads.

Why are salt and sand used? Tick the two correct boxes.

2 marks

maximum 7 marks

Q11. Two pupils investigated the effect of temperature on how fast oil flows through a funnel. They used the equipment in the photograph below.

(a) They measured the time taken for all the oil to flow through the funnel.

What equipment did they use to measure the time?

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

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(b) Complete the table below to show what they should do with each factor in their investigation. Tick one box for each factor.

2 marks

factor change it keep it the same measure it

temperature of the oil

type of oil

volume of oil

time taken for all the oil to flow through the funnel

(c) (i) Look at their results in the table below.

What happens to the time taken for the oil to flow through the funnel as its temperature increases?

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

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

temperature of oil (°C)

time taken for all the oil to flow through the funnel (s)

22 131

40 35

60 22

80 19

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(ii) How long would it take for all the oil to flow through the funnel at 15°C?

Choose from the following times. Tick the correct box.

15 seconds

80 seconds

131 seconds

180 seconds

1 mark maximum 5 marks

##

Some crushed ice at –20° C was placed in a beaker. A thermometer was put into the ice, and the beaker was heated gently for 15 minutes.

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The graph shows how the reading on the thermometer changed over the 15 minutes.

(a) By how much did the temperature in the beaker change during the 15 minutes?

.............................................. °C 1 mark

(b) Which letter on the graph shows:

(i) when the ice is melting? ......................................... 1 mark

(ii) when the water is boiling?........................................ 1 mark

(c) During the experiment, the beaker and its contents were quickly removed from the heat and weighed on a balance at the following times.

at 0 minutes

at 5 minutes

at 10 minutes

at 15 minutes

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(i) At which two times would you expect the readings on the balance to be the same?

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

(ii) Between which two of these times was the mass of the contents of the beaker changing most rapidly?

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

Maximum 5 marks

Q13. A test tube of crushed ice is taken out of a freezer and left in a warm room. The graph shows how the temperature in the test tube changes.

(a) What is happening to the ice at stage B?

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

(b) Why does the temperature of the water stop rising at 23°C (stage D)?

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

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

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(c) Four descriptions of the ways molecules could move are given below.

They vibrate around fixed points.

They move past each other and are close together.

They move in straight lines, colliding occasionally.

They all move in the same direction at the same speed.

(i) How do the molecules move at stage A? Write A in the correct box above.

1 mark

(ii) How do the molecules move at stage C? Write C in the correct box above.

1 mark

(d) Ice from a freezer is put in a glass of water at room temperature. The ice floats in the water.

(i) What does this show about the density of the ice compared to that of water?


Ice is more dense than water.

Ice and water have the same density.

Ice is less dense than water.

Ice has a density of zero. 1 mark

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(ii) The fact that ice floats in water tells us something about the distances between the molecules.

Tick the box by the correct statement.

The molecules are further apart in ice than in water.

The molecules are the same distance apart in ice and in water.

The molecules are closer together in ice than in water. 1 mark

Maximum 6 marks

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M1. (a) • fat

accept ‘cream’ 1 (L3)

(b) (i) • calcium 1 (L4)

(ii) any one from

• in the blood

• in blood vessels accept ‘plasma’ accept a named blood vessel accept ‘arteries’ or ‘veins’ or ‘capillaries’ or ‘circulatory system’ accept ‘blood cells’ or ‘red cells’ accept ‘the heart pumps blood’ ‘pumped by the heart’ is insufficient

1 (L4)

(c) (i) • mammals if more than one box is ticked, award no mark

1 (L4)

(ii) • The milk contains antibodies. if more than one box is ticked, award no mark

1 (L4) [5]

M2. (a) any two from

• vitamins accept a named vitamin

• minerals accept ‘mineral salt’ or a named mineral

• water do not accept ‘fibre’ or ‘roughage’

2 (L5)

(b) A if more than one box is ticked, award no mark

1 (L5)

(c) D if more than one box is ticked, award no mark

1 (L5)

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(d) contains more protein accept ‘is better balanced’ do not accept ‘less carbohydrate’ or ‘less fat’

1 (L6)

(e) any one from

• coconut contains more fat accept ‘it contains more fat’

• potato contains less fat

• fat is a richer source of energy than carbohydrate accept ‘fat contains more energy than carbohydrates’

1 (L6) [6]

M3. (a) (i) • fat 1 (L5)

(ii) • carbohydrate 1 (L5)

(iii) • protein 1 (L6)

(b) any one from

• 200 g if more than one box is ticked, award no mark

1 (L6)

(c) any one from

• vitamins accept a named vitamin

• water

• fibre accept ‘roughage’ accept ‘minerals’ or a named mineral do not accept ‘calcium’

1 (L5)

(d) (i) • 1100 accept a number from 1000 to 1300

1 (L6)

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(ii) any one from

• to make milk

• milk contains calcium

• a breast-fed baby needs calcium for growth or for bones or teeth

accept ‘the baby needs calcium’

• she has to have enough calcium for herself and the baby accept ‘to feed herself and the baby’ accept ‘the baby needs 600 and she needs 500’ accept ‘this is recommended for mother and baby’ ‘to feed the baby’ is insufficient

1 (L6) [7]

M4. (a) (i) enzyme(s)

accept ‘(hydrochloric) acid’ do not accept other named acids accept ‘biological catalyst’ ‘catalyst’ is insufficient accept any named enzyme (e.g. amylase or protease) ‘saliva’ is insufficient

1 (L7)

(ii) it is broken down (into smaller molecules) accept ‘forms amino acids’ ‘it is absorbed’ is insufficient accept ‘breaks up’ do not accept ‘it breaks down into glucose’

1 (L6)

(b) (i) any one from

• as a control accept ‘control’ ‘so that it is a fair test’ is insufficient accept ‘as a comparison’

• to show that enzyme digested the jelly accept ‘to show what would happen without the enzyme or pineapple’

• to show that water does not digest the jelly 1 (L7)

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(ii) any one from

• it took less time to digest the jelly (than B) accept ‘it breaks it down or up more quickly’ an explanation of why it is faster is insufficient

• chopped up jelly digested more quickly ‘it is easier to swallow’ is insufficient ‘it is easier to digest’ is insufficient accept ‘it only takes an hour to digest’ ‘it digests in an hour’ is insufficient

1 (L6)

(c) (i) • 5 g cube of (chopped up) jelly and same amount or 15 cm3 of juice

accept ‘use same amount of jelly and juice’ do not accept ‘water’

1 (L7)

• boil the juice first accept ‘use (fresh) boiled juice’ do not accept ‘boiling juice’

1 (L6)

(ii) the jelly was not digested accept ‘how much jelly had broken down’ accept ‘nothing happened’ ‘nothing’ is insufficient as it implies nothing is left in the test tube accept ‘5 g of jelly (cubes)’ accept ‘a small amount of jelly has dissolved’ ‘the jelly has not dissolved’ is insufficient

1 (L6) [7]

M5. (a)

if more than one line is drawn from an object, award no mark for that object

3 (L3)

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(b) • Brass does not bend as easily as copper. if more than two boxes are ticked, deduct one mark for each incorrect tick

1 (L3)

• Brass is harder than copper minimum mark zero

1 (L3)

(c) • liquid zinc and solid copper if more than one box is ticked, award no mark

1 (L4) [6]

M6. (a)

If more than four lines are drawn, deduct one mark for each incorrect line minimum mark zero

4 (L4)

(b) answers may only be taken from the list in part (a)

good electrical conductor 1 (L4)

melting point of 3422°C 1 (L4)

answers may be in either order accept ‘conducts electricity’ or ‘conductor’ accept ‘ high melting point’ or ‘solid at high temperatures’ do not accept ‘good thermal conductor’

[6]

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M7. (a) steel

do not accept ‘stainless steel’ do not accept ‘carbon’

1 (L5)

(b) • brass

• solder answers may be in either order both answers are required for the mark

1 (L5)

(c) 80 accept ‘100 – 20’

1 (L5)

(d) (i) it does not contain iron accept ‘it does not contain steel’ accept ‘only iron rusts’ or ‘only steel rusts’ accept ‘it is made of tin, copper and zinc’

1 (L6)

(ii) oxygen accept ‘O

2’

1 (L6) [5]

M8. (a) (i) any one from

• iron

• copper accept calcium

1 (L5)

(ii) any one from

• sulphur

• chlorine accept ‘oxygen’ or ‘carbon’

1 (L5)

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(iii) any two from

• calcium carbonate

• calcium oxide

• carbon dioxide

• iron sulphide accept ‘copper chloride’ answers may be in either order both answers are required for the mark

1 (L6)

(b) any one from

• the iron reacted or combined with sulphur

accept ‘the iron gained sulphur’ or ‘sulphur was added to the iron’ accept ‘the iron has joined with the sulphur’ do not accept ‘iron has mixed with the sulphur’ do not accept ‘sulphur or iron added a new layer’

• the sulphur had mass accept ‘the sulphur weighed 0.8 g’

1 (L6)

(c) copper chloride 1 (L6)

[5]

M9. (a) oxygen → magnesium oxide

both parts of the equation are needed do not accept ‘air’ for oxygen

1

(b) nitrogen 1

the following explanations are only applicable to nitrogen: if any other answer is given above a mark cannot be awarded for the second part

any one from

• contains no oxygen accept ‘the other jars all contain oxygen’

• nitrogen is unreactive accept ‘nitrogen does not support burning’

1 [3]

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M10. (a) •

award three marks for all four correct lines award two marks for any three correct lines award one mark for any two correct lines if more than one line is drawn from any change of state, do not credit that change of state

3 (L3)

(b) • 0 °C accept ‘zero’ do not accept ‘nothing’

1 (L4)

(c) • it decreased accept ‘it got colder’ ‘it dropped to below 0°C’ is insufficient any references to time are insufficient

1 (L3)

(d) • Sand increases friction between car tyres and the road.

• Salt makes ice melt. if more than two boxes are ticked, deduct a mark for each incorrect box minimum of zero

2 (L4) [7]

M11. (a) any one from

• stopclock ‘clock’ is insufficient

• stopwatch ‘watch’ is insufficient accept ‘timer’

1 (L3)

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(b)

if all four answers are correct, award two marks if three answers are correct, award one mark if more than one box is ticked in any row, count the answer as incorrect for that row

2 (L4)

factor change it keep it

the same measure it

temperature of the oil

type of oil

volume of oil

time taken for all the oil to flow through the funnel

(c) (i) any one from

• it or time gets less

accept ‘the time gets faster’ or ‘it gets faster’ do not accept ‘the time gets slower’ unless linked to a decrease in temperature

• it or time decreases

accept ‘the oil flows faster’ accept ‘it goes through faster’

1 (L4)

(ii) 180 seconds if more than one box is ticked, award no mark

1 (L3) [5]

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## (a) 121

do not accept ‘120’ 1 (L5)

(b) (i) Q 1 (L5)

(ii) S 1 (L5)

(c) (i) 0 and 5 both stages are required for the mark

1 (L5)

(ii) 10 and 15 both stages are required for the mark

1 (L5) [5]

M13. (a) It melts or is melting

accept ‘it starts to melt’ or ‘thaws’ or ‘turns to liquid’ or ‘changes state’ do not accept ‘it is between solid and liquid’

1 (L5)

(b) it is room temperature accept no more energy being put in’

1 (L5)

(c) (i) They vibrate around fixed points A

if more than one box is labelled A, award no mark 1 (L6)

(ii) They move past each other and are close together C

if more than one box is labelled C, award no mark disregard any ticks

1 (L6)

(d) (i) Ice is less dense than water. if more than one box is ticked, award no mark

1 (L6)

(ii) The molecules are further apart in ice than in water. if more than one box is ticked, award no mark

1 (L6) [6]

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q1.€€€€€€€€€ the drawings show the amounts of different

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