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GCSE CHEMISTRY
Foundation Tier Paper 1
Monday 22 May 2023
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.
0
This question is about atoms.
Atoms contain three types of particle:
• electrons
• neutrons
• protons.
Tick () one box.
An electron and a neutron
An electron and a proton
A neutron and a proton
0 1 . 3 The formula of a compound is N2O
How many of each type of atom are in one molecule of N2O? [2 marks]
Nitrogen
Oxygen
An atom of element Z contains:
• 3 electrons
• 4 neutrons
• 3 protons.
0 1 . 4
Give the name of element Z
Use the periodic table.
[1 mark]
0 1 . 5 Complete Figure 1 to show the position of the particles in an atom of element Z.
Use the symbols:
= electron = neutron = proton
Turn over for the next question
[4 marks]
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