10 igcse science mock paper 3

8/11/2019 10 IGCSE Science Mock Paper 3

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10 Coordinated ScienceMock Examination

CANDIDATENAMETEACHER NAME

_______________________________________________Paper 3 0654/31

July/August 20142 hours

Candidates answer on the Question paper

No additional materials are required

_______________________________________________

READ THESE INSTRUCTIONS FIRSTWrite your name on all the work you hand in.Write in dark blue or black pen.You may use a soft pencil for any diagrams, graphs, tables or rough working.Do not use staples, paper clips, highlighters, glue or correction fluid.

Answer all questions.The number of marks is given in brackets [ ] at the end of each question or partquestion.A copy of the Periodic Table is printed on page 30.

For Examiners Use

Biology Section /40

Chemistry Section /40

Physics Section /40

Total /120

%


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BLANK PAGE


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CHEMISTRY

1. This question is about elements and the periodic table.

Use the Chemistry Data Sheet(p30) to help you answer these questions.

(a)Complete the sentences.

Elements in the periodic table are arranged in order of atomic ........................ .

The elements in Group .................... are called the noble gases.

[2]

(b) Calcium (Ca) is in Group 2. Name one other element in Group 2.

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

[1]

(c) Draw a ring around the correct answer to complete each sentence.

(i)Sodium (Na) is

[1]

(ii)Nickel (Ni) is

[1]

This question is continued on the next page

an alkali metal.

a non-metal

a transition metal

an alkali metal.

a non-metal

a transition metal


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(d) The graph shows the boiling points of the halogens.

Use the graph to help you answer these questions.

(i) Use the correct answer from the box to complete the sentence.

At room temperature chlorine is a .................................................. .

[1]

(ii) Describe the trend in boiling point from fluorine to iodine.

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

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

[1]

(e) Chlorine reacts with metals to produce metal chlorides.

(i) When a chlorine atom forms a chloride ion it gains one electron.

What is the charge on a chloride ion?

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

[1]

This question is continued on next page


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(ii)Write a balanced symbol equation for the reaction between sodium and

chlorine.

............................................................................................................................. [2]

[Total 10 marks]

2. Low sodium salt is used on food. This label is from a packet of low sodium

salt.

A chemist tests the low sodium salt for the substances on the label.

(a) The chemist tests for sodium ions and potassium ions using a flame test.

Draw a ring around the correct answer to complete each sentence.

(i) In a flame test, sodium ions produce a colour.

[1]

(ii) In a flame test, potassium ions produce a colour.

[1]

lilac

red

yellow

lilac

red

yellow


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(b) The chemist added hydrochloric acid to low sodium salt. Carbon dioxide gas

was produced.

Describe the test for carbon dioxide and give the result of the test.

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

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

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

............................................................................................................................. [2]

(c)The chemist made a solution of low sodium salt.

(i)The chemist made a solution of low sodium salt.

Tick() onebox to show the chemical used to test for chloride ions.

[1]

(ii)Sodium hydroxide solution is used to test for magnesium ions. Draw a ring

around the colour of precipitate produced by this test.brown green white

[1]

[Total 6 marks]


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3. Iron chloride has the formula FeCl3.

Relative atomic masses (Ar): Cl = 35.5; Fe = 56.

(i)Calculate the relative formula mass (Mr) of iron chloride (FeCl3).

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

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

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

Relative formula mass (Mr) of iron chloride = ..........................

[2]

(ii) Calculate the percentage of iron in iron chloride (FeCl3).

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

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

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

Percentage of iron in iron chloride = .......................%

[2]

[Total 4 marks]


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4.A student investigated the rate of reaction between sodium thiosulfate and

dilute hydrochloric acid.

The student placed a conical flask over a cross on a piece of paper.

The student mixed the solutions in the flask.

The solution slowly went cloudy.

The student timed how long it took until the cross could not be seen.

The equation for the reaction is:

(a)Explain why the solution goes cloudy.

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

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

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

.............................................................................................................................. [2]



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(b)The student repeated the experiment with different concentrations of sodium

thiosulfate.

(i)Calculate the mean (average) time for 0.080 moles per dm3 of sodiumthiosulfate. Show your working.

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

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

Mean = ................. seconds [2]

(ii) Describe and explain, in terms of particles and collisions, the effect thatincreasing the concentration of sodium thiosulfate has on the rate of the reaction.

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

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

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

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

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

........................................................................................................................ [3]

[Total 7 marks]


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5. The symbol equation for the decomposition of hydrogen peroxide is:

(a)This reaction is exothermic.

What is an exothermic reaction?

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

............................................................................................................................. [1]

(b) A student measured the volume of oxygen produced by 50cm3 of hydrogen

peroxide.

The graph shows the results.


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Use the graph to:

(i) describe the changes in the rate of the reaction from 0 to 35 seconds.

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

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

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

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

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

............................................................................................................................. [3]

(ii) determine the total volume of oxygen gas collected. ............................ cm3[1]

[Total 5 marks]


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6. The full chemical symbols of four elements are shown below.

Use this information to answer (i)to (iii)below.

(i)Name the element that does not react with any of the others, and explain your

answer.

name ......................................................

explanation ......................................................................................................

............................................................................................................................. [1]

(ii)Name a pair of elements that combine together to form an ionic compound.

.. and .. [1]

(iii)Name two elements whose atoms have electrons in three energy levels

(shells).

.. and . [2]

(b)Magnesium reacts with oxygen to form magnesium oxide.

A student found that when 4.8g of magnesium were completely oxidised, 8.0g of

magnesium oxide were formed.

(i) Calculate the mass of oxygen that combined with 4.8g of magnesium.

............................................................................................................................. [2]

(ii)The student then burned 2.4g of magnesium in a vessel containing 5.0g of

oxygen. Calculate the mass of oxygen left over after all the magnesium had

reacted. Show your working.

[2]

[Total 8 marks]


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PHYSICS

1. Fig. 1.1shows a weightlifter.

Fig 1.1

(a) The total weight lifted by the weightlifter is 1600 newtons, which he lifts

through 2 metres in 0.5 seconds.

(i)Calculate the work done on the bar and weights. Show your working and statethe formula that you use.

Formula:

Working:

........................................................................................................................ [2]

(ii)Calculate the power developed by the weightlifter while lifting the bar and

weights. Show your working and state the formula that you use.

Formula:

Working:

........................................................................................................................ [2]


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3. A student connects a series circuit as shown.

(a) (i)

The student closes the switch. Name two components in the circuit, other than

the lamp, which affect the size of the current.

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

2 .......................................................................................................................... [2]

(ii)The current is 0.40 A. Calculate the charge, in coulombs, that flows during a

time of 20 s.

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

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

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

Charge = .............................. C [2]

(b)The student was asked to connect a second lamp so that each lamp can be

switched on and off independently. Show, by drawing on the circuit above, how

this can be done.

[2]

[Total 6 marks]


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4. (a)The diagram shows a ray of light directed at a semicircular glass block.

(i)Name line X.

............................................................................................................................. [1]

(ii)State which letter, a, b, c, d, e orf, is an angle of incidence.

............................................................................................................................. [1]

(iii)Name angle b.

............................................................................................................................ [1]

(iv)At point Y light passes from air to glass but refraction does not take place.

How can you tell this from the diagram?

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

............................................................................................................................ [1]

(v)Why does refraction not take place at point Y?

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

............................................................................................................................ [1]

[Total 5 marks]


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5. (a)The names of three types of radiation are given in List A. Various

properties of thesethree types of radiation are given in List B.

Draw a line to link each type of radiation in List Ato its correct property in List

B.

Draw only threelines.

[3]

(b)Uranium-234 is radioactive. It emits alpha particles and decays to thorium-

230. Complete the nuclear equation for this decay.

[2]

List A List B

Type of radiation Property of radiation


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(c)To study the blood flow in a patients lungs, a doctor injects some

technetium-99 compound into the patient. The gamma radiation given out by the

technetium-99 atoms is detected using a gamma camera outside the patients

body.

Which statement gives the reason why gamma radiation is used? Put a tick ()in

the box next to your choice.

It can travel through a vacuum.

It is not affected by a magnet.

It can pass through the human body.

[1]

(d) The graph shows how the count rate from a sample of technetium-99 changes

with time.

(i)What is the half-life of technetium-99? Show how you get your answer.

Half-life = ................................. hours[2]

[Total 8 marks]


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6. Fig. 6.1shows a room heated by a convector heater, placed in the middle of

the floor.

Fig 6.1

(a)On Fig. 6.1draw the convection currents of air produced by the heater. Use

arrows to show their direction. [1]

(b) State which labelled part of the room will be the:

coldest, .

hottest. .

Explain your answers.

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

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

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

[3]

[Total 4 marks]


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7. This question is about an electric kettle.

(a)The Sankey diagram represents the energy transfers taking place when the

kettle heats some water.

What is the efficiency of the kettle?

Show the equation you use and your working.

Efficiency = [2]


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(b) Why does the heating element in the kettle get hot when its electrical supply

is switched on?

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

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

............................................................................................................................[2]

(c)The power of the heating element in the kettle is 2000 W when it is connected

to a 230 V mains supply.

(i) State the equation linking power, current and voltage.

............................................................................................................................ [1]

(ii)Show that the current in the heating element is approximately 9 A.

Current = ......................A [1]

(iii)The plug of the kettle has a fuse.

Fuses are available in values of: 1A 3A 7A 13A

Identify the fuse that is the most suitable for this kettle, and explain why.

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

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

............................................................................................................................[2]

[Total 8 marks]


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BIOLOGY

1. Diagram 1 shows a section through the heart.

Diagram 1

(a)On the diagram, name the parts labelled A, B, C and D.

[4]

(b) Diagram 2 shows part of the blood supply in the lungs.

Diagram 2

(i) Blood vesselF is an arteryName the types of blood vessel labelled G and H.

G ........................................ H ..................................... [2]



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(ii) Give one way in which the composition of the blood in vessel F is different

from the composition of the blood in vessel H.

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

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

[1](c) Diagram 3 shows a villus from the human alimentary canal.

(i)Name one part of the alimentary canal in which villi are found.

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

[1]

(ii) The villi help absorption of digested food, such as glucose, to take place

quickly.

Describe two ways by which the structure of a villus helps this to happen.

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

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

2..........................................................................................................................

........................................................................................................................ [2][Total 10 marks]


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2. The diagram shows a section through the human eye, with a contact lens (part

A) in place.

(a)Name the structures labelled B and C.

B ..............................................................................................................................

C ....................................................................................................................... [2]

(b)Explain the changes that take place in structures B and C when a person

focuses on a nearby object.

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

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

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

............................................................................................................................ [2]

(c)Structures in the eye respond to stimuli by means of reflex actions.

(i)Describe one reflex action that occurs in the eye.

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

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

............................................................................................................................ [2]


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(ii) Give a reason for this reflex action.

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

............................................................................................................................ [1]

(d) Human responses are also controlled by hormones.

For one named example of a hormone, give its site of production and its effect.

Hormone

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

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

Site of production

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

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

Effect

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

............................................................................................................................ [3]

[Total 10 marks]


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3. Caterpillars feed on hawthorn bushes. The caterpillars are eaten by small birds

such as the dunnock. The dunnocks are preyed on by a larger carnivorous bird,

the sparrowhawk.

This data was collected from a hedgerow.

(a) Use the information in thetable to draw an accurate pyramid of numbers for

this data on the grid below. [4]


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(b) Describe how a pyramid of biomass from the same data would differ from the

pyramid of numbers.

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

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

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

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

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

............................................................................................................................. [2]

(c)Explain why not all the energy in a producer passes to the primary consumer.

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

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

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

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

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

............................................................................................................................. [2]

(d) Some farmers are removing hedges in order to increase the size of their

fields. This means that the number of hawthorn bushes is decreasing.

Suggest how removing hawthorn bushes will affect the size of the dunnock

population.

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

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

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

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

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

............................................................................................................................. [2]

[Total 10 marks]


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4. (a) Students tested eight different foods, AH, for carbohydrate, fat and

protein. The table shows the students results.

(i)How many of the foods contained only carbohydrate?

............................................................................................................................. [1]

(ii) Which of the foods contained carbohydrate and fat andprotein?

Tick() onebox.

B, C and Donly

Band Donly

C only

[1]

(b) A persons diet should contain carbohydrate and fat andprotein.

Give two reasons why.

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

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

2................................................................................................................................

............................................................................................................................. [2]


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(c) As well as carbohydrate, fat and protein, the body also needs vitamins and

mineral ions.

(i)Why does the body need vitamins and mineral ions?

............................................................................................................................ [1]

(ii)Draw a ring around the correct answer to complete the sentence.

Compared to the mass of carbohydrates, the body needs mass

of vitamins and mineral ions.

[1]

[Total 6 marks]

5. There are several different stages during the process of human reproduction.

Some of these stages are shown in the box.

Complete the table by writing the name of the stages in each empty box to show

the correct order in which they occur.

[Total 4 marks]

End of Examination

a greater

a smaller

the same


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10 igcse science mock paper 3

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