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OCR A LEVEL JUNE 2022 CHEMISTRY B PAPER 2 QUESTION PAPER
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OCR A LEVEL JUNE 2022 CHEMISTRY B PAPER 2 QUESTION PAPER
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, Oxford Cambridge and RSA
Monday 20 June 2022 – Morning
A Level Chemistry B (Salters)
H433/02 Scientific literacy in chemistry
Time allowed: 2 hours 15 minutes
You must have:
* 9 1 0 2 8 7 1 7 7 1 *
• a clean copy of the Advance Notice Article (inside
this document)
• the Data Sheet for Chemistry B
You can use:
• a scientific or graphical calculator
• an HB pencil
* H 4 3 3 0 2 *
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 100.
• 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 20 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2022 [601/5371/4]
DC (RW/CT) 301086/4 tyrionpapers.com
OCR is an exempt Charity
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, 2
Answer all the questions.
1 Portland cement is a powder that ‘sets’ to a strong solid when water is added. The cement is
usually mixed with gravel so that it sets to make concrete.
The typical ingredients of Portland cement are shown in the table.
Ingredients % by
(solids) mass
CaO 61 – 67
SiO2 19 – 23
Al 2O3 2.5 – 6
Fe2O3 0–6
SO3 1.5 – 4.5
(a) Give the systematic name for Fe2O3.
.............................................................................................................................................. [1]
(b) (i) A hazard warning for Portland cement states that it is alkaline.
One of the ingredients in the table reacts with water to form an alkaline solution.
Write an equation for the reaction of this ingredient with water including any ions that
are formed.
[2]
(ii) When Portland cement sets, the calcium oxide absorbs carbon dioxide from the air.
Suggest an equation for the reaction that occurs.
[1]
(c) One way of testing for the presence of calcium in the cement would be a flame test, though
any iron present would interfere.
(i) What is the flame colour of calcium?
...................................................................................................................................... [1]
© OCR 2022
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