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OCR AS Level Chemistry B (Salters) H033/01 Foundations of chemistry
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OCR AS Level Chemistry B (Salters) H033/01 Foundations of chemistry
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Tuesday 16 May 2023 – MorningAS Level Chemistry B (Salters)
H033/01 Foundations of chemistry
Time allowed: 1 hour 30 minutes
You must have:
the Data Sheet for Chemistry B
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*
You can use:
3
9
a scientific or graphical calculator an HB pencil
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8
*
8
0
7
3
0
* H 0 3 3 0 1 *
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 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 70.
The marks for each question are shown in brackets [ ].
This document has 24 pages.
ADVICE
Read each question carefully before you start your answer.
© OCR 2023 [601/5446/9]
OCR is an exempt Charity
DC (EF/JG) 318786/5
Turn over
, 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 What is the outer electron configuration of tellurium, Te?
A 4p6
B 4s2 4p4
C 5p6
D 5s2 5p4
Your answer [1]
2 Which of the following exists as cis/trans isomers?
A (CH3)2CCHCH3
B CH3CHCHCH3
C CH3CH2CH2CH3
D CH2C(CH3)2
Your answer [1]
3 Which of these properties of chlorine is a benefit to humankind?
A It is a bleach.
B It is a gas.
C It is toxic to humans.
D It is pale green.
Your answer [1]
© OCR 2023
, 3
4 A solid substance has a high melting point and does not conduct electricity.
Which type of structure does this substance have?
A Ionic lattice
B Metallic lattice
C Simple molecular
D Structure resembling graphite
Your answer [1]
5 A student looks up the concentrations of two gases in a sample.
The concentration of gas Y is given as 0.0001% and the concentration of gas Z is given as 1 ppm.
What is correct about the gases in the sample?
A Gases Y and Z are present in equal concentrations.
B It is impossible to tell the relative concentrations as the volume and pressure are not given.
C There is more gas Y than gas Z.
D There is more gas Z than gas Y.
Your answer [1]
6 Which of the following is an elimination reaction?
A CH3COOCH3 + NaOH CH3COONa + CH3OH
B C2H4 + Br2 C2H4Br2
C C6H5OH + (CH3CO)2O C6H5OCOCH3 + CH3COOH
D C2H5OH C2H4 + H2O
Your answer [1]
© OCR 2023 Turn over
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