OCR A Level Chemistry B (Salters) Fundamentals
of Chemistry(H433/01) VERIFIED QP
AND MS
Oxford Cambridge and RSA
June 2026 – Morning
A Level Chemistry B (Salters)
H433/01 Fundamentals of Chemistry
Time allowed: 2 hours 15 minutes
You must have:
• the Data Sheet for Chemistry B
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 page 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 110.
• 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.
DC (PQ/CB) 346688/5
OCR is an
, exempt Charity
Turn over
*1849471323*
,
, 2
Section A
You should spend a maximum of 40 minutes on this section.
Write your answer to each question in the box provided.
1 Part of a protein structure can be represented as:
–CONHCH(CH3)CONHCH2CONHCH(CH3)–
What is correct about this part of the protein structure?
A All its amino acids show optical isomerism.
B It has three peptide links.
C It is an addition polymer.
D It is made from three different amino acids.
Your answer [1]
2 What is correct about the greenhouse effect?
A Greenhouse gas bonds vibrate more when warmed by infrared radiation.
B Greenhouse gases reflect infrared radiation back to Earth.
C The Earth emits mostly ultraviolet radiation.
D The principal radiation from the Sun is infrared.
Your answer [1]
3 An organic compound A is oxidised to a different compound which forms a silver mirror with Tollens’
reagent.
Which could be compound A?
A propanal
B propan-1-ol
C propan-2-ol
D propanone
Your answer [1]
© OCR 2025
of Chemistry(H433/01) VERIFIED QP
AND MS
Oxford Cambridge and RSA
June 2026 – Morning
A Level Chemistry B (Salters)
H433/01 Fundamentals of Chemistry
Time allowed: 2 hours 15 minutes
You must have:
• the Data Sheet for Chemistry B
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 page 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 110.
• 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.
DC (PQ/CB) 346688/5
OCR is an
, exempt Charity
Turn over
*1849471323*
,
, 2
Section A
You should spend a maximum of 40 minutes on this section.
Write your answer to each question in the box provided.
1 Part of a protein structure can be represented as:
–CONHCH(CH3)CONHCH2CONHCH(CH3)–
What is correct about this part of the protein structure?
A All its amino acids show optical isomerism.
B It has three peptide links.
C It is an addition polymer.
D It is made from three different amino acids.
Your answer [1]
2 What is correct about the greenhouse effect?
A Greenhouse gas bonds vibrate more when warmed by infrared radiation.
B Greenhouse gases reflect infrared radiation back to Earth.
C The Earth emits mostly ultraviolet radiation.
D The principal radiation from the Sun is infrared.
Your answer [1]
3 An organic compound A is oxidised to a different compound which forms a silver mirror with Tollens’
reagent.
Which could be compound A?
A propanal
B propan-1-ol
C propan-2-ol
D propanone
Your answer [1]
© OCR 2025
