Cambridge International Examinations
Cambridge Secondary 1 Checkpoint
Anisah Abdulssalam
SCIENCE 1113/02
Paper 2 October 2018
45 minutes
Candidates answer on the Question Paper.
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The number of marks is given in brackets [ ] at the end of each question or part question.
The total number of marks for this paper is 50.
This document consists of 17 printed pages and 3 blank pages.
IB18 10_1113_02/4RP
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2
1 Draw a straight line from each function to the correct plant cell.
Draw only two lines.
function plant cell
absorbs water and
minerals from soil
transports water and
minerals
[2]
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2 Reactions between metals and non-metals form compounds.
(a) Sulfur reacts with metals to form a type of compound called a sulfide.
Complete the table to show the type of compound formed by different non-metals.
One has been done for you.
non-metal type of compound
chlorine chloride
oxygen oxide
sulfur sulfide
[2]
(b) Iron reacts with a compound and oxygen to form rust.
What is the name of this compound?
water [1]
3 Gabriella connects an electrical circuit.
A1 A4
A2
A3
There are two lamps and four ammeters in the circuit.
The lamps are identical.
The reading on A1 is 0.8 A.
What are the readings on the other ammeters?
A2 is 0.4 A.
A3 is 0.4 A.
A4 is 0.8 A. [2]
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4
4 The diagram shows a frog.
Scientists classify animals with backbones into five main vertebrate groups.
Classify the frog into its correct vertebrate group.
Give one reason for your answer.
vertebrate group amphibian
reason it lives nearby water and on land. it lays its eggs in water and the larvae live most of their life there
[2]
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5 Rajiv draws pictures of the stars in the night sky from his bedroom window.
He draws a picture in January.
He draws a picture in June.
(a) Write down one difference between the two pictures.
The stars arent in the same position [1]
(b) Rajiv draws another picture in January of the next year.
Describe what the picture will look like.
same or similar one to the one in January
reason: the earth rotates on an axis so it returns to its initial position of January [1]
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6 (a) (i) Name the process that plants use to make their own food.
photosynthesis [1]
(ii) Name one other product of this process.
oxygen [1]
(b) In an investigation, identical plants are placed in three different gases.
Each plant is given constant light.
The plants are kept in the same conditions for one week.
The diagram shows the results of this investigation.
at start
gas A gas B gas C
after one
week
gas A gas B gas C
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Describe the results of this investigation.
plant kept in gas A The plant grew taller/ increased in size and the leaves looked fuller and healthier
plant kept in gas B the plant is wilting
plant kept in gas C there is no visible change/growth
[3]
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7 Carlos investigates the reaction of zinc with dilute sulfuric acid.
He puts zinc into a conical flask and then adds 25 cm3 of cold dilute sulfuric acid.
The diagram shows his apparatus.
10 20 30 40 50 60 70 80 90 100
gas syringe
zinc
dilute sulfuric acid
Carlos then records the volume of gas in the syringe each minute.
The diagrams below show some of his results.
10 20 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100
1 minute 2 minutes
10 20 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100
4 minutes 6 minutes
(a) Write down the volume of gas collected after 6 minutes.
40 cm3 [1]
(b) Carlos repeats the investigation using 25 cm3 of warm dilute sulfuric acid.
Predict the volume of gas collected after 2 minutes.
27 cm3 [1]
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9
(c) Carlos then repeats the investigation using 25 cm3 of more concentrated sulfuric acid.
Explain why the reaction is faster.
Use ideas about particles and collisions in your answer.
Because there is more concentration of sulfuric acid, there are more particles of sulfuric acid in an area
to react with. The particles collide more frequently and therefore react faster.
[2]
8 Yuri draws a picture to show the air particles in front of a loudspeaker.
air particles
loudspeaker
Write the letter C on the diagram where there is a compression of air particles.
Write the letter R on the diagram where there is a rarefaction of air particles.
[2]
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9 The picture shows a mountaineer climbing Mount Everest.
Mount Everest is nearly 9 km high.
The air pressure at the top of the mountain is very low. This makes breathing very difficult.
The mountaineer wears a tight fitting mask connected to a breathing apparatus.
A chemical in the breathing apparatus removes waste gas from his breath.
(a) Name the life process which provides the mountaineer with the energy for climbing.
respiration [1]
(b) Which gas, found in the air, is needed for this process?
oxygen
[1]
(c) Which waste gas needs to be removed from the mountaineer’s breath?
carbon dioxide [1]
(d) Suggest why low air pressure at the top of mountains makes breathing more difficult.
If there is low air pressure, air is less dense, so less oxygen taken in with each breath.
[2]
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10 Youssef and Blessy investigate the reaction of metals with dilute hydrochloric acid.
They put 10 cm3 of hydrochloric acid into four test-tubes.
They then add 0.1g of a different metal to each test-tube.
Youssef and Blessy measure the time it takes for the metal to react completely.
This is the reaction time.
The table shows their results.
reaction time
metal
in s
calcium 15
iron 290
magnesium 23
zinc 230
(a) Put the metals in the table in order of reactivity.
most reactive calcium
magnesium
zinc
least reactive iron [1]
(b) Write the word equation for the reaction between magnesium and hydrochloric acid.
+ +
magnesium hydrochloric acid magnesium chloride hydrogen
[3]
(c) Youssef and Blessy wear safety glasses during the investigation.
Explain why.
To prevent the bubbles formed from the chemical reaction from getting into their eyes [1]
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12
11 White light can be split into different colours by a glass prism.
white light
glass prism
(a) Write down the name given to this splitting of white light.
dispersion [1]
(b) The white light is split into seven different colours.
Complete the order of the seven colours.
red
orange
yellow
green
blue
indigo
violet
[2]
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12 Substances are either elements, compounds or mixtures.
(a) Look at the list of substances.
carbon
copper
magnesium carbonate
sulfur
water
Sort the substances into compounds and elements.
One has been done for you.
compound element
magnesium carbonate carbon
water copper
sulfur
[2]
(b) Read these sentences about mixtures.
Tick () the box next to the correct sentence.
Mixtures are pure substances.
Mixtures can be separated by physical means.
Mixtures contain only elements.
Elements in mixtures are joined by chemical bonds. [1]
(c) Magnesium carbonate reacts with an acid to make magnesium nitrate.
Which acid must be used in this reaction?
nitric acid [1]
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14
13 Chen draws a diagram to show water changing from a liquid to water vapour.
water vapour
water molecules
liquid
Complete the sentences.
All the water molecules in the liquid are moving.
energy
Some of the molecules have more .....................................................
faster
These molecules move ...................................................... enough to escape the surface of the
liquid.
evaporation
This is called .................................................. .
gas
This makes the liquid become .................................... .
[4]
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14 The diagram shows a model of the human heart.
blood from
body X
blood to
lungs
(a) Complete the table about the composition of the blood going to the lungs.
Tick () the two boxes that describe the correct composition of this blood.
concentration concentration
of carbon dioxide of oxygen
high low high low
[1]
(b) The blood vessel labelled X carries blood away from the heart.
(i) What name is given to this type of blood vessel?
artery
[1]
(ii) The blood vessel labelled X has very thick walls.
Explain why this is necessary.
to carry blood with high pressure and prevent damage to the walls
[1]
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15 Blessy draws five different distance/time graphs on the same axes.
A
B
C
distance
from D
Blessy
E
time
(a) The distance axis shows how far an object is away from Blessy.
Which graph shows an object moving towards Blessy?
Circle the correct answer.
A B C D E
[1]
(b) Describe what is happening to the speed of object B.
It is accelerating with increasing speed
[1]
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16 Lily draws a diagram to explain the principle of moments.
d1 d2
F2
F1
Use the diagram to explain the principle of moments.
Moment is the force times the perpendicular distance from the pivot
Anticlockwise moment is equal to clockwise moment. Therefore, F1*D1=F2*D2
[2]
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