SUMMER 2026
PREDICTED PAPER
A Level Chemistry B (Salters)
H433/01 Fundamentals of Chemistry
OCR
Time allowed: 2 hours 15 minutes
You must have:
• the Data Sheet for Chemistry B
You can use:
a scientific or graphical calculator
a ruler (cm/mm)
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using a correct method, even if your answer is wrong.
INFORMATION
• The total mark for this paper is 110.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 35 pages.
ADVICE
• Read each question carefully before you start your answer.
Turn over
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, 2
Section A
You should spend a maximum of 40 minutes on this section.
Write your answer to each question in the box provided.
1 An atom of phosphorus-31 forms a 3− ion. Which statement about this ion is
correct?
A It has 16 neutrons and 15 electrons
B It has 16 neutrons and 18 electrons
C It has 15 neutrons and 18 electrons
D It has 31 neutrons and 15 electrons
Your answer [1]
2 A sample of element Z contains only two isotopes. The relative atomic mass is 106.4
and one isotope has mass number 106 at 27.3% abundance. What is the mass
number of the second isotope?
A 104
B 108
C 110
D 107
Your answer [1]
3 Which correctly ranks these types of electromagnetic radiation in order of increasing
wavelength?
A gamma < X-ray < ultraviolet < visible < infrared < microwave < radio
B radio < microwave < infrared < visible < ultraviolet < X-ray < gamma
C ultraviolet < visible < infrared < gamma < X-ray
D gamma < ultraviolet < visible < X-ray < infrared
Your answer [1]
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, 3
4 Which row correctly matches the molecule to its shape and bond angle?
Molecule Shape Bond angle
A BF₃ Trigonal planar 120°
B CH₄ Tetrahedral 107°
C NH₃ Trigonal planar 109.5°
D H₂O Linear 104.5°
Your answer [1]
5 Which row correctly identifies the oxidising and reducing agents in this reaction?
Zn + CuSO₄ → ZnSO₄ + Cu
Oxidising agent Reducing agent
A Zn Cu
B CuSO₄ Zn
C ZnSO₄ Cu
D Cu CuSO₄
Your answer [1]
6 Which reagents are used to dehydrate an alcohol?
A Concentrated H₂SO₄ and heat
B Dilute HCl and heat
C NaOH and heat
D Concentrated HNO₃ and heat
Your answer [1]
for more: tyrionpapers.com
, 4
7 Which row correctly describes the effect of increasing pressure on the Haber process?
Equilibrium yield Rate of reaction
A Increases Increases
B Increases Decreases
C Decreases Increases
D No change Increases
Your answer [1]
8 A compound has a molecular ion peak at m/z = 60. It shows a peak at m/z = 45 (loss of
15) and m/z = 31. Which compound is this?
A Ethanoic acid
B Propan-1-ol
C Propanal
D Methyl ethanoate
Your answer [1]
9 Which row correctly shows the number of hydrogen bonds between DNA base pairs?
A-T pair G-C pair
A 3 2
B 2 3
C 2 2
D 3 3
Your answer [1]
for more: tyrionpapers.com
PREDICTED PAPER
A Level Chemistry B (Salters)
H433/01 Fundamentals of Chemistry
OCR
Time allowed: 2 hours 15 minutes
You must have:
• the Data Sheet for Chemistry B
You can use:
a scientific or graphical calculator
a ruler (cm/mm)
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using a correct method, even if your answer is wrong.
INFORMATION
• The total mark for this paper is 110.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 35 pages.
ADVICE
• Read each question carefully before you start your answer.
Turn over
for more: tyrionpapers.com
, 2
Section A
You should spend a maximum of 40 minutes on this section.
Write your answer to each question in the box provided.
1 An atom of phosphorus-31 forms a 3− ion. Which statement about this ion is
correct?
A It has 16 neutrons and 15 electrons
B It has 16 neutrons and 18 electrons
C It has 15 neutrons and 18 electrons
D It has 31 neutrons and 15 electrons
Your answer [1]
2 A sample of element Z contains only two isotopes. The relative atomic mass is 106.4
and one isotope has mass number 106 at 27.3% abundance. What is the mass
number of the second isotope?
A 104
B 108
C 110
D 107
Your answer [1]
3 Which correctly ranks these types of electromagnetic radiation in order of increasing
wavelength?
A gamma < X-ray < ultraviolet < visible < infrared < microwave < radio
B radio < microwave < infrared < visible < ultraviolet < X-ray < gamma
C ultraviolet < visible < infrared < gamma < X-ray
D gamma < ultraviolet < visible < X-ray < infrared
Your answer [1]
for more: tyrionpapers.com
, 3
4 Which row correctly matches the molecule to its shape and bond angle?
Molecule Shape Bond angle
A BF₃ Trigonal planar 120°
B CH₄ Tetrahedral 107°
C NH₃ Trigonal planar 109.5°
D H₂O Linear 104.5°
Your answer [1]
5 Which row correctly identifies the oxidising and reducing agents in this reaction?
Zn + CuSO₄ → ZnSO₄ + Cu
Oxidising agent Reducing agent
A Zn Cu
B CuSO₄ Zn
C ZnSO₄ Cu
D Cu CuSO₄
Your answer [1]
6 Which reagents are used to dehydrate an alcohol?
A Concentrated H₂SO₄ and heat
B Dilute HCl and heat
C NaOH and heat
D Concentrated HNO₃ and heat
Your answer [1]
for more: tyrionpapers.com
, 4
7 Which row correctly describes the effect of increasing pressure on the Haber process?
Equilibrium yield Rate of reaction
A Increases Increases
B Increases Decreases
C Decreases Increases
D No change Increases
Your answer [1]
8 A compound has a molecular ion peak at m/z = 60. It shows a peak at m/z = 45 (loss of
15) and m/z = 31. Which compound is this?
A Ethanoic acid
B Propan-1-ol
C Propanal
D Methyl ethanoate
Your answer [1]
9 Which row correctly shows the number of hydrogen bonds between DNA base pairs?
A-T pair G-C pair
A 3 2
B 2 3
C 2 2
D 3 3
Your answer [1]
for more: tyrionpapers.com
