AQA GCSE COMBINED SCIENCE_ SYNERGY 3H 2025 PREDICTED QUESTION PAPER

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GCSE

COMBINED SCIENCE : SYNERGY
8465/3H
H
Higher Tier Paper 3 Physical Sciences
Materials Time allowed: 1 hour 45
For this paper you must have: minutes
a ruler
a scientific calculator
the periodic table (enclosed).
For Examiner’s Use
Instructions
Question Mark
Use black ink or black ball-point pen.
1
Pencil should only be used for drawing.
Fill in the boxes at the top of this page. 2
Answer all questions in the spaces provided. 3
Do not write outside the box around each 4
page or on blank pages.
If you need extra space for your answer(s), use the lined 5
pages at the end of this book. Write the question 6
number against your answer(s). 7
Do all rough work in this book. Cross through any work you do not want
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to be marked.
In all calculations, show clearly how you work out your answer. TOTAL

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.

SOLE Property of Tyrion's GCSE
GCSE AQA
AQA CombinedSciences
Combined Sciences – Synergy – 3H

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0 1 1 Figure 1 shows the electronic structure of an atom of magnesium.




Figure
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 Identify the element shown in Figure 1.
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 Explain why this element belongs to Group 2 of the periodic table.
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0 1 2
Magnesium reacts with oxygen to form magnesium oxide.

 Complete the word equation for this reaction:
Magnesium + Oxygen → ________
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0 1 3
Magnesium oxide is an ionic compound.

 Draw a dot and cross diagram to show the bonding in magnesium oxide.
Include charges on the ions.
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GCSE AQA Combined Sciences – Synergy – 3H

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0 1 4 Explain why magnesium oxide has a high melting point.

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[2 Marks]

Figure 2 compares the structure of diamond and graphite.




0 1 5 Describe two differences between the structures of diamond and graphite.
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0 1 6
Explain why graphite conducts electricity but diamond does not.

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Metals can be shaped into different forms.

Explain how metallic bonding allows metals to be malleable.
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0 1 8
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Metals conduct electricity due to free electrons.

Explain how these free electrons contribute to electrical conductivity in
metals.
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[1 Marks]
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GCSE AQA Combined Sciences – Synergy – 3H