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OCR
Oxford Cambridge and RSA
Monday 12 June 2023 – Morning
A Level Chemistry A
H432/01 Periodic table, elements and physical chemistry
Time allowed: 2 hours 15 minutes
You must have:
the Data Sheet for Chemistry A
You can use:
a scientific or graphical calculator
an HB pencil
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 28 pages.
ADVICE
• Read each question carefully before you start your answer.
, OCR is an exempt Charity
© OCR 2023
[601/5255/2] DC
(LK/CGW) 323136/6
, Section A
You should spend a maximum of 20 minutes on this section.
Write your answer to each question in the box provided.
1 Which sample contains the greatest number of molecules?
A 35.0 g of
C 2H 2 B 45.0 g
of C2H6 C 60.0 g
of C4H10 D100.0
g of C6H6
Your answer [1]
2 0.688 g of an oxide of manganese is reduced by hydrogen gas to form manganese
metal and
0.235 g of water.
What is the formula of the oxide of manganese?
A MnO
B MnO2
C Mn2O3
D Mn3O4
Your answer [1]
3 How many hydrogen atoms are in 2.50 g of pharmacolite,
CaHAsO4•2H2O (Mr = 216.0)?
A 6.97 × 1021
B 2.09 × 1022
C 2.79 × 1022
D 3.48 × 1022
Your answer [1]
, 4 40.0 cm3 of 0.200 mol dm–3 HCl is added to 60.0 cm3 of 0.100 mol
dm–3 NaOH. What is the concentration of the resulting solution?
A 0.0200 mol dm–3 HCl and 0.0200 mol dm–3
NaCl B 0.0200 mol dm–3 HCl and 0.0400 mol
dm–3 NaCl C 0.0200 mol dm–3 HCl and 0.0600
mol dm–3 NaCl D 0.0600 mol dm–3 HCl and
0.0200 mol dm–3 NaCl
Your answer [1]
5 Which compound has polar molecules?
A HCN
B BCl3
C CO2
D C2F4
Your answer [1]
OCR
Oxford Cambridge and RSA
Monday 12 June 2023 – Morning
A Level Chemistry A
H432/01 Periodic table, elements and physical chemistry
Time allowed: 2 hours 15 minutes
You must have:
the Data Sheet for Chemistry A
You can use:
a scientific or graphical calculator
an HB pencil
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 28 pages.
ADVICE
• Read each question carefully before you start your answer.
, OCR is an exempt Charity
© OCR 2023
[601/5255/2] DC
(LK/CGW) 323136/6
, Section A
You should spend a maximum of 20 minutes on this section.
Write your answer to each question in the box provided.
1 Which sample contains the greatest number of molecules?
A 35.0 g of
C 2H 2 B 45.0 g
of C2H6 C 60.0 g
of C4H10 D100.0
g of C6H6
Your answer [1]
2 0.688 g of an oxide of manganese is reduced by hydrogen gas to form manganese
metal and
0.235 g of water.
What is the formula of the oxide of manganese?
A MnO
B MnO2
C Mn2O3
D Mn3O4
Your answer [1]
3 How many hydrogen atoms are in 2.50 g of pharmacolite,
CaHAsO4•2H2O (Mr = 216.0)?
A 6.97 × 1021
B 2.09 × 1022
C 2.79 × 1022
D 3.48 × 1022
Your answer [1]
, 4 40.0 cm3 of 0.200 mol dm–3 HCl is added to 60.0 cm3 of 0.100 mol
dm–3 NaOH. What is the concentration of the resulting solution?
A 0.0200 mol dm–3 HCl and 0.0200 mol dm–3
NaCl B 0.0200 mol dm–3 HCl and 0.0400 mol
dm–3 NaCl C 0.0200 mol dm–3 HCl and 0.0600
mol dm–3 NaCl D 0.0600 mol dm–3 HCl and
0.0200 mol dm–3 NaCl
Your answer [1]
5 Which compound has polar molecules?
A HCN
B BCl3
C CO2
D C2F4
Your answer [1]
