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CHM1

pgs 1-16

10/10/02

Surname

10:18 am

Page 1

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Other Names

Centre Number

Candidate Number

Candidate Signature

General Certificate of Education
January 2003
Advanced Subsidiary Examination

CHEMISTRY
CHM1
Unit 1 Atomic Structure, Bonding and Periodicity
Friday 10 January 2003 Morning Session

In addition to this paper you will require:
a calculator.

For Examiner’s Use
Number

Mark

Number

1

Time allowed: 1 hour 30 minutes
Instructions
• Use blue or black ink or ball-point pen.
• Fill in the boxes at the top of this page.
• Answer all questions in Section A and Section B in the spaces provided. All working must be shown.
• Do all rough work in this book. Cross through any work you do not want marked.
• The Periodic Table/Data Sheet is provided on pages 3 and 4. Detach this perforated sheet at the start of the examination.
Information
• The maximum mark for this paper is 90.
• Mark allocations are shown in brackets.
• This paper carries 30 per cent of the total marks for AS. For Advanced Level this paper carries 15 per cent of the total marks.
• You are expected to use a calculator where appropriate.
• The following data may be required.
Gas constant R = 8.31 J K–1 mol–1
• Your answers to questions in Section B should be written in continuous prose, where appropriate. You will be assessed on your ability to use an appropriate form and style of writing, to organise relevant information clearly and coherently, and to use specialist vocabulary, where appropriate.

Advice
• You are advised to spend about 1 hour on Section A and about 30 minutes on Section B.

Copyright © 2003 AQA and its licensors. All rights reserved. APW/0103/CHM1

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Total
(Column 1)



Total
(Column 2)



TOTAL
Examiner’s Initials

Mark

CHM1

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2
SECTION A
Answer all questions in the spaces provided.

1

(a)

Complete the following table.

Particle

Relative charge

Relative mass

Proton
Neutron
Electron
(3 marks)

(b)

An atom of element Z has two more protons and two more neutrons than an atom of Give the symbol, including mass number and atomic number, for this atom of Z.

34
16 S.

....................................................................................................................................................... (2 marks)

(c)

Complete the electronic configurations for the sulphur atom, S, and the sulphide 2–
ion, S .
2

S
S2–

(d)

l s .................................................................................................................................. l s .................................................................................................................................. (2 marks)

2

State the block in the Periodic Table in which sulphur is placed and explain your answer. Block ............................................................................................................................................. Explanation .................................................................................................................................. (2 marks)

APW/0103/CHM1

APW/0103/CHM1

9.0

*

Lanthanides

89



Actinium

Ac

227

57

Lanthanum

La

138.9

39

Yttrium

Y

88.9

21

Scandium

Sc

45.0

† 90 – 103 Actinides

* 58 – 71

88

Radium

Francium

87

Ra

226.0

223.0

Fr

56

55

Ba

Barium

132.9

Cs

38

137.3

37

Caesium

Sr

Strontium

Rb

85.5

Rubidium

20

87.6

19

Ca

Calcium

K

39.1

Potassium

12

40.1

11

Mg

Magnesium

Na

Sodium

4

24.3

23.0

Lithium

3

Beryllium

Li

1
6.9

72

Hafnium

Hf

178.5

40

Zirconium

Zr

91.2

22

Titanium

Ti

47.9

24

25

Tc

98.9...
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