Materials
For this paper you must have:
• a ruler
• a scientific calculator
• the periodic table (enclosed).
Instructions
• Use black ink or black ball-point pen.
• Pencil should only be used for drawing.
• Fill
...
Materials
For this paper you must have:
• a ruler
• a scientific calculator
• the periodic table (enclosed).
Instructions
• Use black ink or black ball-point pen.
• Pencil should only be used for drawing.
• Fill in the boxes at the top of this page.
• Answer all questions in the spaces provided. Do not write outside
the box around each page or on blank pages.
• If you need extra space for your answer(s), use the lined pages at the end of
this book. Write the question number against your answer(s).
• Do all rough work in this book. Cross through any work you do not want
to be marked.
• In all calculations, show clearly how you work out your answer.
Information
• The maximum mark for this paper is 100.
• The marks for questions are shown in brackets.
• You are expected to use a calculator where appropriate.
• You are reminded of the need for good English and clear presentation
in your answers.
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
GCSE
CHEMISTRY
Foundation Tier Paper 2
F
2
*02*
IB/M/Jun22/8462/2F
Do not write
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0 1 box This question is about water.
A student investigated pure water.
The student measured:
• the boiling point of pure water
• the pH of pure water.
0 1 . 1 Complete the sentences.
Choose answers from the box.
[2 marks]
0 4 7 10 25 100
Pure water has a boiling point of °C.
Pure water has a pH of .
0 1 . 2 What could the student use to measure the pH of pure water?
[1 mark]
3
*03*
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A different student investigated sea water. box
Sea water contains dissolved solids.
This is the method used.
1. Measure a 50 cm3 sample of the sea water.
2. Heat the sample until all the water has evaporated.
3. Measure the mass of solid that remains.
4. Repeat steps 1 to 3 three more times.
0 1 . 3 Which two pieces of equipment were needed in this investigation?
[2 marks]
Tick () two boxes.
Balance
Measuring cylinder
Ruler
Thermometer
Timer
Question 1 continues on the next page
4
*04*
IB/M/Jun22/8462/2F
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0 1 box . 4 Table 1 shows the results.
Table 1
Sea water sample Mass of solid that remained in grams
1 1.73
2 1.70
3 1.75
4 1.78
Calculate the mean mass of solid that remained.
[2 marks]
Mean mass = g
0 1 . 5 A 50 cm3 sample of sea water from a different source contained 1.50 g of
dissolved solids.
Calculate the mass of dissolved solids in 1000 cm3 of this sea water.
[2 marks]
Mass = g
5
*05*
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11
Sodium chloride is a dissolved solid in sea water.
Sodium chloride contains sodium ions and chloride ions.
0 1 . 6 Complete the sentence.
Choose the answer from the box.
[1 mark]
crimson lilac yellow
The student tested sea water for sodium ions using a flame test.
The colour of the flame was .
0 1 . 7 Complete the sentence.
Choose the answer from the box.
[1 mark]
brown green white
The student tested sea water for chloride ions by adding nitric acid and
silver nitrate solution.
The colour of the precipitate formed was .
Turn over for the next question
6
*06*
IB/M/Jun22/8462/2F
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0 2 box This question is about hydrocarbons in crude oil.
0 2 . 1 Table 2 shows information about three fractions obtained from crude oil.
Table 2
Fraction Boiling point range in °C
A 200–300
B 100–150
C Below 30
Figure 1 shows the fractionating column used to separate fractions A, B and C.
Figure 1
The temperature of the fractionating column is:
• 30 °C at the top
• 400 °C at the bottom.
Complete Figure 1 to show where fractions A, B and C are collected.
[1 mark]
7
*07*
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0 2 box . 2 Table 3 shows information about three fractions obtained from crude oil.
Table 3
Fraction Range of number of
carbon atoms in each molecule
Petrol 5–12
Diesel oil 15–19
Heavy fuel oil 20–40
Complete the sentences.
Choose answers from the box.
[2 marks]
lower the same higher
Compared to petrol, the viscosity of heavy fuel oil is .
Compared to petrol, the flammability of diesel oil is .
Question 2 continues on the next page
8
*08*
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Table 4 box shows the percentage of two fractions obtained from two different sources of
crude oil.
Table 4
Source
Percentage (%) of fraction
Kerosene Heavy fuel oil
J 13 30
K 4 44
0 2 . 3 Complete Figure 2.
You should:
• complete the y-axis scale
• plot the percentage of the heavy fuel oil fraction obtained from source K.
Use Table 4.
[2 marks]
Figure 2
9
*09*
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0 2 box . 4 Kerosene is in higher demand than heavy fuel oil.
Suggest why crude oil from source J is in higher demand than crude oil from
source K.
Use Table 4.
[1 mark]
Large hydrocarbon molecules can be cracked to produce smaller hydrocarbon
molecules including alkanes.
0 2 . 5 Which two of the following can be used to crack large hydrocarbon molecules?
[2 marks]
Tick () two boxes.
A catalyst
A fertiliser
Air
Ozone
Steam
0 2 . 6 Alkanes have the general formula CnH2n+2
Complete the formula of the alkane molecule containing 11 carbon atoms.
[1 mark]
C11H___
10
*10*
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12
0 2 . 7 C2H6 is an alkane.
Which type of bond is found in a C2H6 molecule?
[1 mark]
Tick () one box.
A double bond between two carbon atoms.
A double bond between two hydrogen atoms.
A single bond between two carbon atoms.
A single bond between two hydrogen atoms.
0 2 . 8 Which two substances are produced when alkanes completely combust?
[2 marks]
Tick () two boxes.
Carbon
Carbon dioxide
Carbon monoxide
Hydrogen
Water
11
*11*
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Turn over for the next question box
DO NOT WRITE ON THIS PAGE
ANSWER IN THE SPACES PROVIDED
12
*12*
IB/M/Jun22/8462/2F
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0 3 This question is about box the Earth’s atmosphere.
Table 5 shows:
• the estimated percentages of gases in the Earth’s early atmosphere
• the percentages of gases in the Earth’s atmos
[Show More]
