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F
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GCSECOMBINED SCIENCE: TRILOGY
Foundation Tier
Chemistry Paper 1F Friday
17 May 2024 Morning
Time allowed: 1 hour
15 minutes
Materials
For Examiner’s Use
For this paper you must have:
• a ruler Question Mark
• a scientific calculator 1
• the periodic table (enclosed).
2
Instructions 3
• Use black ink or black ball-point pen. 4
• Pencil should only be used for drawing.
5
• Fill in the boxes at the top of this page.
• Answer all questions in the spaces provided. 6
• If you need extra space for your answer(s), use the lined pages at the end of 7
this book. Write the question number against your answer(s). 8
• Do all rough work in this book. Cross through any work you do not want to be
marked. TOTAL
• In all calculations, show clearly how you work out your answer.
Information
• The maximum mark for this paper is 70.
• 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.
IB/M/Jun24/G4005/E7
8464/C/1F
, 2
Do not write
outside the
0 1 Potassium is in Group 1 of the periodic table. box
0 1 . 1 What name is given to Group 1 elements?
[1 mark]
Tick (✓) one box.
Alkali metals
Halogens
Noble gases
0 1 . 2 A potassium atom is very small.
What is the radius of a potassium atom?
[1 mark]
Tick (✓) one box.
0.2 cm
0.2 mm
0.2 nm
0 1 . 3 What name is given to the number of protons in an atom?
[1 mark]
Tick (✓) one box.
Atomic number
Group number
Mass number
IB/M/Jun24/8464/C/1F
, 3
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outside the
0 1 . 4 Table 1 shows the name and the relative charge of the particles in box
a potassium atom.
Table 1
Name of particle Relative charge
Proton
0
Electron –1
Complete Table 1.
[2 marks]
0 1 . 5 The electronic structure of a potassium atom is 2,8,8,1
Figure 1 represents the electronic structure of a potassium ion.
Figure 1
What is the charge on a potassium ion?
[1 mark]
Tick (✓) one box.
–1 0 +1
Turn over ►
IB/M/Jun24/8464/C/1F
, 4
Do not write
outside the
0 1 . 6 Figure 2 shows the melting points of some Group 1 elements. box
Figure 2
Predict the melting point of potassium.
[1 mark]
Melting point = °C
IB/M/Jun24/8464/C/1F