Exam (elaborations)
OCR A Level Chemistry A June 2024 Paper 1 (H432-01)
OCR A Level Chemistry A June 2024 Paper 1 (H432-01)
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OCR A LEVELCHEMISTRY PAPERS
2024
,
, 2
SECTION A
You should spend a maximum of 20 minutes on this section.
Write your answer to each question in the box provided.
1 Oxygen has the electron configuration 1s22s22p4.
How are the electrons in an atom of oxygen arranged in the p-orbitals?
A
↑↑ ↑↑
B
↑↓ ↑↓
C
↑↑ ↑ ↑
D
↑↓ ↑ ↑
Your answer [1]
2 Water has the anomalous properties below.
• Water has relatively high melting and boiling points.
• Ice is less dense than water.
Which statement explains these anomalous properties?
A The covalent bonding within water molecules.
B The hydrogen bonding between water molecules.
C The induced dipole–dipole interactions (London forces) between water molecules.
D The ionic bonding between water molecules.
Your answer [1]
© OCR 2024
, 3
3 Which chemical process is the most sustainable in terms of the atom economy of the iron
produced?
A Fe2O3 + 3CO 2Fe + 3CO2
B Fe2O3 + 3H2 2Fe + 3H2O
C 2Fe2O3 4Fe + 3O2
D 2Fe2O3 + 3C 4Fe + 3CO2
Your answer [1]
4 Which compounds of magnesium can be used as ‘antacids’?
A Chlorides
B Hydroxides
C Nitrates
D Sulfates
Your answer [1]
5 Which statement explains the trend in boiling points down the halogens group?
A The bond enthalpy of the covalent bonds increases.
B The halogens become less electronegative.
C The induced dipole–dipole interactions (London forces) become stronger.
D The reactivity of the halogens decreases.
Your answer [1]
© OCR 2024 Turn over
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