Chemistry
Higher and Standard level
Specimen papers 1A, 1B and 2
For first examinations in 2025
, CONTENTS
Chemistry higher level paper 1A specimen question paper
Chemistry higher level paper 1A specimen markscheme
Chemistry higher level paper 1B specimen question paper
Chemistry higher level paper 1B specimen markscheme
Chemistry higher level paper 2 specimen question paper
Chemistry higher level paper 2 specimen markscheme
Chemistry standard level paper 1A specimen question paper
Chemistry standard level paper 1A specimen markscheme
Chemistry standard level paper 1B specimen question paper
Chemistry standard level paper 1B specimen markscheme
Chemistry standard level paper 2 specimen question paper
Chemistry standard level paper 2 specimen markscheme
,SPEC/4/CHEMI/HPM/ENG/TZ0/XX
Chemistry
Higher level
Paper 1A
Specimen paper
2 hours [Paper 1A and Paper 1B]
Instructions to candidates
y Do not open this examination paper until instructed to do so.
y Answer all questions.
y For each question, choose the answer you consider to be the best and indicate your choice on
the answer sheet provided.
y A calculator is required for this paper.
y A clean copy of the chemistry data booklet is required for this paper.
y The maximum mark for paper 1A is [40 marks].
y The maximum mark for paper 1A and paper 1B is [75 marks].
0000 – 6101
14 pages © International Baccalaureate Organization 2023
, SPEC/4/CHEMI/HPM/ENG/TZ0/XX
–2– 0000 – 6101
Section A
1. What is thin-layer chromatography best used for separating?
A. molecules of varying polarity
B. molecules of similar polarity
C. metals in an alloy
D. water of crystallization from hydrated salts
2. Ice containing only the isotope 2H sinks and does not melt when dropped into ordinary
distilled water maintained at 3 C.
Which statement is correct?
A. The isotope 2H has a high natural abundance.
2
B. H2O (s) has a higher melting point than normal ice.
2
C. H2O (s) has a lower density than normal ice-cold water.
2
D. H2O has different chemical properties from normal water.
3. The table lists successive ionization energies of an element Z.
Ionization number 1st 2nd 3rd 4th 5th 6th
Ionization energy / kJ mol−1 577.54 1816.68 2744.78 11 577.5 14 841.9 18 379.0
Which is the formula of the stable oxide of the element Z?
A. Z2O
B. ZO
C. Z2O3
D. ZO2
Higher and Standard level
Specimen papers 1A, 1B and 2
For first examinations in 2025
, CONTENTS
Chemistry higher level paper 1A specimen question paper
Chemistry higher level paper 1A specimen markscheme
Chemistry higher level paper 1B specimen question paper
Chemistry higher level paper 1B specimen markscheme
Chemistry higher level paper 2 specimen question paper
Chemistry higher level paper 2 specimen markscheme
Chemistry standard level paper 1A specimen question paper
Chemistry standard level paper 1A specimen markscheme
Chemistry standard level paper 1B specimen question paper
Chemistry standard level paper 1B specimen markscheme
Chemistry standard level paper 2 specimen question paper
Chemistry standard level paper 2 specimen markscheme
,SPEC/4/CHEMI/HPM/ENG/TZ0/XX
Chemistry
Higher level
Paper 1A
Specimen paper
2 hours [Paper 1A and Paper 1B]
Instructions to candidates
y Do not open this examination paper until instructed to do so.
y Answer all questions.
y For each question, choose the answer you consider to be the best and indicate your choice on
the answer sheet provided.
y A calculator is required for this paper.
y A clean copy of the chemistry data booklet is required for this paper.
y The maximum mark for paper 1A is [40 marks].
y The maximum mark for paper 1A and paper 1B is [75 marks].
0000 – 6101
14 pages © International Baccalaureate Organization 2023
, SPEC/4/CHEMI/HPM/ENG/TZ0/XX
–2– 0000 – 6101
Section A
1. What is thin-layer chromatography best used for separating?
A. molecules of varying polarity
B. molecules of similar polarity
C. metals in an alloy
D. water of crystallization from hydrated salts
2. Ice containing only the isotope 2H sinks and does not melt when dropped into ordinary
distilled water maintained at 3 C.
Which statement is correct?
A. The isotope 2H has a high natural abundance.
2
B. H2O (s) has a higher melting point than normal ice.
2
C. H2O (s) has a lower density than normal ice-cold water.
2
D. H2O has different chemical properties from normal water.
3. The table lists successive ionization energies of an element Z.
Ionization number 1st 2nd 3rd 4th 5th 6th
Ionization energy / kJ mol−1 577.54 1816.68 2744.78 11 577.5 14 841.9 18 379.0
Which is the formula of the stable oxide of the element Z?
A. Z2O
B. ZO
C. Z2O3
D. ZO2
