AQA GCSE COMBINED SCIENCE_ TRIOLOGY CHEMISTRY 1H 2025 PREDICTED QUESTION PAPER

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AQA GCSE
CHEMISTRY 2025 Triology
Higher Tier Paper 1
Materials Time allowed: 1 hour 45 minutes
For this paper you must have:
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.
2
Fill in the boxes at the top of this page.
Answer all questions in the spaces provided. Do not write outside 3
the box around each page or on blank pages. 4
If you need extra space for your answer(s), use the lined pages at the end of 5
this book. Write the question number against your answer(s).
6
Do all rough work in this book. Cross through any work you do not want
to be marked. 7
In all calculations, show clearly how you work out your answer. 8

Information TOTAL

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.




For Examiner’s Use
SOLE Property of Tyrion's AQA Chemistry
AQA Chemistry 1H 2025
1H 2025 Triology
Triology Question
Question Paper
Paper
Question Mark
1

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Do not write
Outside the
Box
0 1 A
A group of students investigated the reaction between hydrochloric acid
and calcium carbonate to produce calcium chloride, water, and carbon
dioxide.

The equation for the reaction is:

𝐶𝐶𝐶𝐶𝐶𝐶𝐶𝐶3 (𝑠𝑠) + 2𝐻𝐻𝐻𝐻𝐻𝐻(𝑎𝑎𝑎𝑎) → 𝐶𝐶𝐶𝐶𝐶𝐶𝐶𝐶2 (𝑎𝑎𝑎𝑎) + 𝐻𝐻2 𝑂𝑂(𝑙𝑙) + 𝐶𝐶𝐶𝐶2 (𝑔𝑔)

The students added powdered calcium carbonate to hydrochloric acid in
a conical flask.
Name two observations the students would make during the reaction.
[2 marks]

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0 1 B
The students wanted to confirm that carbon dioxide gas was produced
during the reaction.
Describe a test for carbon dioxide gas and state the expected result if
carbon dioxide is present.
[2 marks]
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0 1 C The students wanted to obtain pure, dry crystals of calcium chloride
from the reaction mixture. Outline the steps they should follow to
achieve this.
[4 marks]
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0 1 D The students reacted 5 g of calcium carbonate with excess hydrochloric acid.
Calculate the volume of carbon dioxide gas produced at room temperature and
pressure (RTP).

Relative atomic masses (𝐴𝐴𝑟𝑟 ): Ca = 40, C = 12, O = 16 Molar volume at RTP =
24 𝑑𝑑𝑑𝑑3 /𝑚𝑚𝑚𝑚𝑚𝑚
[2 marks]

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AQA Chemistry 1H 2025 Triology Question Paper

, 3
Do not wr
Outside t
Box
0 2 A A group of students investigated the reactivity of four different metals:
magnesium, zinc, iron, and copper. They reacted each metal with dilute
hydrochloric acid and recorded their observations. The students also tested
displacement reactions between solutions of metal salts and different
metals.

The table below shows the results of the reaction between the metals and
hydrochloric acid:

Metal Reaction with Hydrochloric Acid
Magnesium Vigorous bubbling, heat released
Zinc Bubbling, slower than magnesium
Iron Few bubbles, slow reaction
Copper No reaction



i. Arrange the four metals in order of decreasing reactivity based on the observations.
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ii. Explain why copper does not react with hydrochloric acid.
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0 2 B The students placed pieces of magnesium, zinc, and iron into separate solutions of
copper sulfate (𝐶𝐶𝐶𝐶𝐶𝐶𝑂𝑂4 ) and recorded their observations:

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Metal Observation in Copper Sulfate Solution
Magnesium Blue color fades; reddish-brown solid
forms
Zinc Blue color fades slowly; reddish-brown
solid forms
Iron Blue color fades very slowly; reddish-
brown solid forms




AQA Chemistry 1H 2025 Triology Question Paper