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ocrMonday 10 June 2024 – 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)
INSTRUCTIONS
Last name
• 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 pages 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 36 pages.
ADVICE
• Read each question carefully before you start your answer.
Turn over
, 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 An isotope of an element has a mass number of 25.
What is correct for an atom of this isotope?
A It has 12 neutrons.
B It has 25 electrons.
C It has 25 protons.
D The sum of its protons and neutrons is 25.
Your answer [1]
2 What is correct about s orbitals?
A Only elements in Group 1 or Group 2 have them.
B They always contain 2 electrons.
C They are spherical in shape.
D They can contain up to 6 electrons.
Your answer [1]
3 Which species have an electron configuration ending in s1?
A atoms of some d-block elements
B atoms of Group 13
C ions of Group 2
D ions of Group 16
Your answer [1]
approved
, 3
4 Which row has the radiations arranged in order of increasing wavelength?
A infrared < ultraviolet < visible
B infrared < visible < ultraviolet
C ultraviolet < infrared < visible
D ultraviolet < visible < infrared
Your answer [1]
5 What is correct about nuclear fusion reactions?
A They are the way in which all elements are formed.
B They join together atoms to make heavier atoms.
C They only occur under conditions of high temperature and pressure.
D They turn neutrons into protons.
Your answer [1]
6 Which species is present in an acidic solution of glycine, H2NCH2COOH?
A H3N+CH2COOH
B H3N+CH2COO–
C H2NCH2COO–
D H2NCH2COOH2+
Your answer [1]
approved Turn over
, 4
7 In the mass spectrum of ethanoic acid (Mr = 60), what is the cause of the very small peak at
m/z = 61?
A the presence of an ethanol impurity in the ethanoic acid
B the presence of small amounts of CH3COOH2+
C the presence of 13C in the ethanoic acid
D the presence of 1H in the ethanoic acid
Your answer [1]
8 Which compound has optical isomers?
A CH3CH2COOH
B CH3CH2CONH2
C H2NCH2COOH
D H2NCH(CH3)COOH
Your answer [1]
9 Which compound will react with sodium carbonate?
A CH3COCH3
B CH3COOCH3
C CH3CH2CH2OH
D CH3CH2COOH
Your answer [1]
approved
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