AS -LEVEL MAY 2024 OCR CHEMISTRY
AS -LEVEL B
MAY
PAPER
20241OCR
INCLUDING
CHEMISTRY
AS -LEVEL
MARKB
MAY
SCHEME.pdf
PAPER
20241OCR
INCLUDING
CHEMISTRY
MARKB SCHEME.pdf
PAPER 1 INCLUDING MARK SCHEME.pdf
Tuesday 14 May 2024 – Morning
AS Level Chemistry B (Salters)
H033/01 Foundations of chemistry
Time allowed: 1 hour 30 minutes
Turn over
AS -LEVEL MAY 2024 OCR CHEMISTRY
AS -LEVEL B
MAY
PAPER
20241OCR
INCLUDING
CHEMISTRY
AS -LEVEL
MARKB
MAY
SCHEME.pdf
PAPER
20241OCR
INCLUDING
CHEMISTRY
MARKB SCHEME.pdf
PAPER 1 INCLUDING MARK SCHEME.pdf
,AS -LEVEL MAY 2024 OCR CHEMISTRY
AS -LEVEL B
MAY
PAPER
20241OCR
INCLUDING
CHEMISTRY
AS -LEVEL
MARKB
MAY
SCHEME.pdf
PAPER
20241OCR
INCLUDING
CHEMISTRY
MARKB SCHEME.pdf
PAPER 1 INCLUDING MARK SCHEME.pdf
2
SECTION A
You should spend a maximum of 25 minutes on this section.
Write your answer to each question in the box provided.
1 On a Periodic Table the number 39.1 is shown for potassium, K.
What is this number?
A atomic number
B mass number
C relative atomic mass
D relative molecular mass
Your answer [1]
2 SiO2 has a covalent network structure.
What is correct for SiO2?
A It consists of SiO2 molecules joined by strong intermolecular bonds.
B It does not conduct electricity when molten.
C It has a low melting point.
D It is readily soluble in water.
Your answer [1]
3 What is the missing product of the nuclear fusion reaction shown?
2H + 3H 1n + ........................
1 1 0
A a beryllium nucleus
B a helium nucleus
C a lithium nucleus
D a proton
Your answer [1]
© OCR 2024
AS -LEVEL MAY 2024 OCR CHEMISTRY
AS -LEVEL B
MAY
PAPER
20241OCR
INCLUDING
CHEMISTRY
AS -LEVEL
MARKB
MAY
SCHEME.pdf
PAPER
20241OCR
INCLUDING
CHEMISTRY
MARKB SCHEME.pdf
PAPER 1 INCLUDING MARK SCHEME.pdf
,AS -LEVEL MAY 2024 OCR CHEMISTRY
AS -LEVEL B
MAY
PAPER
20241OCR
INCLUDING
CHEMISTRY
AS -LEVEL
MARKB
MAY
SCHEME.pdf
PAPER
20241OCR
INCLUDING
CHEMISTRY
MARKB SCHEME.pdf
PAPER 1 INCLUDING MARK SCHEME.pdf
3
4 Magnesium oxide reacts with dilute hydrochloric acid.
What is correct for this reaction?
A A gas is given off.
B A green solution of a salt is formed.
C It is a neutralisation.
D Magnesium hydrochloride is formed.
Your answer [1]
5 This question is about the relationship between enthalpy changes and bonds broken and made.
Which row is correct?
sign of ΔH description bonds broken and made
more energy released in
A – endothermic making bonds than used
in breaking bonds
less energy released in
B – exothermic making bonds than used
in breaking bonds
less energy released in
C + endothermic making bonds than used
in breaking bonds
more energy released in
D + exothermic making bonds than used
in breaking bonds
Your answer [1]
6 What are possible products from cracking an alkane molecule?
A one alkane molecule and two alkene molecules
B two alkane molecules
C two alkane molecules and one alkene molecule
D two alkene molecules
Your answer [1]
© OCR 2024 Turn over
AS -LEVEL MAY 2024 OCR CHEMISTRY
AS -LEVEL B
MAY
PAPER
20241OCR
INCLUDING
CHEMISTRY
AS -LEVEL
MARKB
MAY
SCHEME.pdf
PAPER
20241OCR
INCLUDING
CHEMISTRY
MARKB SCHEME.pdf
PAPER 1 INCLUDING MARK SCHEME.pdf
, AS -LEVEL MAY 2024 OCR CHEMISTRY
AS -LEVEL B
MAY
PAPER
20241OCR
INCLUDING
CHEMISTRY
AS -LEVEL
MARKB
MAY
SCHEME.pdf
PAPER
20241OCR
INCLUDING
CHEMISTRY
MARKB SCHEME.pdf
PAPER 1 INCLUDING MARK SCHEME.pdf
4
7 What is a risk, rather than a benefit, of using chlorine solution?
A It can be toxic.
B It is a disinfectant.
C It kills bacteria.
D It sterilises water.
Your answer [1]
8 An impure organic liquid is being purified after preparation.
The liquid is insoluble in water.
Why is a separating funnel used?
A To complete the distillation.
B To remove the sodium sulfate used for drying.
C To separate the impure liquid from aqueous washings.
D To separate the pure product from water.
Your answer [1]
9 What is correct for all the halogens (Group 17)?
A Their atoms have electronic configurations ending p5.
B They are gases.
C They are readily soluble in water.
D They have the highest first ionisation enthalpy in their period.
Your answer [1]
© OCR 2024
AS -LEVEL MAY 2024 OCR CHEMISTRY
AS -LEVEL B
MAY
PAPER
20241OCR
INCLUDING
CHEMISTRY
AS -LEVEL
MARKB
MAY
SCHEME.pdf
PAPER
20241OCR
INCLUDING
CHEMISTRY
MARKB SCHEME.pdf
PAPER 1 INCLUDING MARK SCHEME.pdf
AS -LEVEL B
MAY
PAPER
20241OCR
INCLUDING
CHEMISTRY
AS -LEVEL
MARKB
MAY
SCHEME.pdf
PAPER
20241OCR
INCLUDING
CHEMISTRY
MARKB SCHEME.pdf
PAPER 1 INCLUDING MARK SCHEME.pdf
Tuesday 14 May 2024 – Morning
AS Level Chemistry B (Salters)
H033/01 Foundations of chemistry
Time allowed: 1 hour 30 minutes
Turn over
AS -LEVEL MAY 2024 OCR CHEMISTRY
AS -LEVEL B
MAY
PAPER
20241OCR
INCLUDING
CHEMISTRY
AS -LEVEL
MARKB
MAY
SCHEME.pdf
PAPER
20241OCR
INCLUDING
CHEMISTRY
MARKB SCHEME.pdf
PAPER 1 INCLUDING MARK SCHEME.pdf
,AS -LEVEL MAY 2024 OCR CHEMISTRY
AS -LEVEL B
MAY
PAPER
20241OCR
INCLUDING
CHEMISTRY
AS -LEVEL
MARKB
MAY
SCHEME.pdf
PAPER
20241OCR
INCLUDING
CHEMISTRY
MARKB SCHEME.pdf
PAPER 1 INCLUDING MARK SCHEME.pdf
2
SECTION A
You should spend a maximum of 25 minutes on this section.
Write your answer to each question in the box provided.
1 On a Periodic Table the number 39.1 is shown for potassium, K.
What is this number?
A atomic number
B mass number
C relative atomic mass
D relative molecular mass
Your answer [1]
2 SiO2 has a covalent network structure.
What is correct for SiO2?
A It consists of SiO2 molecules joined by strong intermolecular bonds.
B It does not conduct electricity when molten.
C It has a low melting point.
D It is readily soluble in water.
Your answer [1]
3 What is the missing product of the nuclear fusion reaction shown?
2H + 3H 1n + ........................
1 1 0
A a beryllium nucleus
B a helium nucleus
C a lithium nucleus
D a proton
Your answer [1]
© OCR 2024
AS -LEVEL MAY 2024 OCR CHEMISTRY
AS -LEVEL B
MAY
PAPER
20241OCR
INCLUDING
CHEMISTRY
AS -LEVEL
MARKB
MAY
SCHEME.pdf
PAPER
20241OCR
INCLUDING
CHEMISTRY
MARKB SCHEME.pdf
PAPER 1 INCLUDING MARK SCHEME.pdf
,AS -LEVEL MAY 2024 OCR CHEMISTRY
AS -LEVEL B
MAY
PAPER
20241OCR
INCLUDING
CHEMISTRY
AS -LEVEL
MARKB
MAY
SCHEME.pdf
PAPER
20241OCR
INCLUDING
CHEMISTRY
MARKB SCHEME.pdf
PAPER 1 INCLUDING MARK SCHEME.pdf
3
4 Magnesium oxide reacts with dilute hydrochloric acid.
What is correct for this reaction?
A A gas is given off.
B A green solution of a salt is formed.
C It is a neutralisation.
D Magnesium hydrochloride is formed.
Your answer [1]
5 This question is about the relationship between enthalpy changes and bonds broken and made.
Which row is correct?
sign of ΔH description bonds broken and made
more energy released in
A – endothermic making bonds than used
in breaking bonds
less energy released in
B – exothermic making bonds than used
in breaking bonds
less energy released in
C + endothermic making bonds than used
in breaking bonds
more energy released in
D + exothermic making bonds than used
in breaking bonds
Your answer [1]
6 What are possible products from cracking an alkane molecule?
A one alkane molecule and two alkene molecules
B two alkane molecules
C two alkane molecules and one alkene molecule
D two alkene molecules
Your answer [1]
© OCR 2024 Turn over
AS -LEVEL MAY 2024 OCR CHEMISTRY
AS -LEVEL B
MAY
PAPER
20241OCR
INCLUDING
CHEMISTRY
AS -LEVEL
MARKB
MAY
SCHEME.pdf
PAPER
20241OCR
INCLUDING
CHEMISTRY
MARKB SCHEME.pdf
PAPER 1 INCLUDING MARK SCHEME.pdf
, AS -LEVEL MAY 2024 OCR CHEMISTRY
AS -LEVEL B
MAY
PAPER
20241OCR
INCLUDING
CHEMISTRY
AS -LEVEL
MARKB
MAY
SCHEME.pdf
PAPER
20241OCR
INCLUDING
CHEMISTRY
MARKB SCHEME.pdf
PAPER 1 INCLUDING MARK SCHEME.pdf
4
7 What is a risk, rather than a benefit, of using chlorine solution?
A It can be toxic.
B It is a disinfectant.
C It kills bacteria.
D It sterilises water.
Your answer [1]
8 An impure organic liquid is being purified after preparation.
The liquid is insoluble in water.
Why is a separating funnel used?
A To complete the distillation.
B To remove the sodium sulfate used for drying.
C To separate the impure liquid from aqueous washings.
D To separate the pure product from water.
Your answer [1]
9 What is correct for all the halogens (Group 17)?
A Their atoms have electronic configurations ending p5.
B They are gases.
C They are readily soluble in water.
D They have the highest first ionisation enthalpy in their period.
Your answer [1]
© OCR 2024
AS -LEVEL MAY 2024 OCR CHEMISTRY
AS -LEVEL B
MAY
PAPER
20241OCR
INCLUDING
CHEMISTRY
AS -LEVEL
MARKB
MAY
SCHEME.pdf
PAPER
20241OCR
INCLUDING
CHEMISTRY
MARKB SCHEME.pdf
PAPER 1 INCLUDING MARK SCHEME.pdf
