QUESTIONS AND ANSWERS
Exam
A level OCR Chemistry A- Paper 1 June 2023
TESTED AND CONFIRMED A+ ANSWERS
, 3
1 This question is about the first 36 elements in the periodic table:
H He
Li Be B C N O F Ne
Na Mg Al Si P S Cl Ar
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
From these 36 elements only, write the symbol for the element(s) that fit each description.
(a) The three elements that, when in a molecule, can form hydrogen bonds with other suitable
molecules.
........................................................... [1]
(b) The element in Period 2 with the successive ionisation energies shown below.
Ionisation number 1st 2nd 3rd 4th 5th 6th 7th 8th
Ionisation energy
1000 2251 3361 4564 7012 8496 27 107 31 671
/ kJ mol–1
................... [1]
(c) An element that is a solid at RTP with a simple molecular lattice structure.
................... [1]
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, 2
(d) The two elements with atoms containing five unpaired electrons.
....................................... [2]
(e) The element in Period 3 that exists in the solid state as a network of atoms bonded by strong
covalent bonds.
................... [1]
(f) The p-block element in Period 3 that forms a compound with fluorine with octahedral
molecules.
................... [1]
(g) The element that forms 1– ions most readily.
................... [1]
(h) The element with an average atomic mass of 1.244 × 10–22 g.
................... [1]
© OCR 2023
Exam
A level OCR Chemistry A- Paper 1 June 2023
TESTED AND CONFIRMED A+ ANSWERS
, 3
1 This question is about the first 36 elements in the periodic table:
H He
Li Be B C N O F Ne
Na Mg Al Si P S Cl Ar
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
From these 36 elements only, write the symbol for the element(s) that fit each description.
(a) The three elements that, when in a molecule, can form hydrogen bonds with other suitable
molecules.
........................................................... [1]
(b) The element in Period 2 with the successive ionisation energies shown below.
Ionisation number 1st 2nd 3rd 4th 5th 6th 7th 8th
Ionisation energy
1000 2251 3361 4564 7012 8496 27 107 31 671
/ kJ mol–1
................... [1]
(c) An element that is a solid at RTP with a simple molecular lattice structure.
................... [1]
If you need a professional to complete your college homework at a small fee, then reach out to
amazingclasshelp.com
© OCR 2023 Turn over
, 2
(d) The two elements with atoms containing five unpaired electrons.
....................................... [2]
(e) The element in Period 3 that exists in the solid state as a network of atoms bonded by strong
covalent bonds.
................... [1]
(f) The p-block element in Period 3 that forms a compound with fluorine with octahedral
molecules.
................... [1]
(g) The element that forms 1– ions most readily.
................... [1]
(h) The element with an average atomic mass of 1.244 × 10–22 g.
................... [1]
© OCR 2023
