UA008883 GCE Chem Moles wkbk Iss3

GCE

Moles, Formulae and Equations Edexcel Advanced GCE in Chemistry (9080) Edexcel Advanced GCE in Chemistry (Nuffield) (9086)

Issue 3 October 2004

Workbook for GCE students

GCE

Moles, Formulae and Equations Edexcel Advanced GCE in Chemistry (9080) Edexcel Advanced GCE in Chemistry (Nuffield) (9086)

London Qualifications is one of the leading examining and awarding bodies in the UK and throughout the world. It incorporates all the qualifications previously awarded under the Edexcel and BTEC brand. We provide a wide range of qualifications including general (academic), vocational, occupational and specific programmes for employers. Through a network of UK and overseas offices, our centres receive the support they need to help them deliver their education and training programmes to learners. For further information please call Customer Services on 0870 240 9800, or visit our website at .uk

Authorised by Jim Dobson Prepared by Sarah Harrison Publications code UA008883 All the material in this publication is copyright ? London Qualifications Limited 2004

Introduction

This workbook has been developed from an earlier version offering support to students in transition from GCSE Science (Double Award) and the GCE Advanced Subsidiary. The aim of the booklet is to help students to practise their skills in the areas of formulae, equations and simple mole equations. The booklet gives examples for students to work through to help build their confidence. There are some sections involving multi-step calculations. Edexcel acknowledges the help and support received from teachers in updating this latest edition. It replaces previous versions issued in January 1998 and August 2000.

Contents

Section 1 Section 2 Section 3 Section 4

Section 5 Section 6

Section 7

Atoms

1

Exercise 1 Calculation of Molar Mass of compounds

5

Chemical formulae

9

Exercise 2 Writing formulae from names

13

Naming of compounds

19

Exercise 3 Names from formulae

23

The mole

27

Exercise 4a Calculation of the number of moles of material in a 33 given mass of that material

Exercise 4b Calculation of the mass of material in a given

37

number of moles of that material

Exercise 4c Calculation of the volume of a given number of

41

moles of a gas

Exercise 4d Calculation of the number of moles of gas in a given 43 volume of that gas

Exercise 4e Calculation of the mass of a given volume of gas

45

Exercise 4f Calculation of the volume of a given mass of gas

47

Exercise 4g Calculation of the Relative Molecular Mass of a gas 49 from mass and volume data for the gas

Using the idea of moles to find formulae

51

Exercise 5 Calculation of formulae from experimental data

57

Chemical equations; equations in words;

63

writing formulae; balancing the equation

Exercise 6a Balancing equations

65

Exercise 6b What's wrong here?

69

Exercise 6c Writing equations in symbols from equations in

71

words

How equations are found by experiment

73

Exercise 7 Writing equations from experimental data

77

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