edexcelINTERNATIONALGCSEChemistry(9-1)SPECIFICATIONPearson Edexcel International GCSE in Chemistry(4CH1)For first teaching September 2017First examination June 2019Issue 2P PearsonEdexcel,BTEC and LCCI qualificationsEdexcel,BTEC and LCCI qualifications are awarded by Pearson,the UK's largest awardingbody offering academic and vocational qualifications that are globally recognised andbenchmarked.For further information,please visit our qualification websites atqualifications.pearson.com.Altematively,you can get in touch with us using the details onour contact us page at qualifications.pearson.com/contactusAbout PearsonPearson is the world's leading learning company,with 35,000 employees in more than70 countries working to help people of all ages to make measurable progress in their liveslearning flourishes,so do people.Find out more about how we can help you and yourlearners at qualifications.pearson.comThis specification is Issue 2.We will inform centres of any changes to this issue.The latestissue can be found on our website qualifications.pearson.comAcknowledgementsThis specification has been produced by Pearson on the basis of consultation with teachers,examiners,consultants and other interested parties.Pearson would like to thank all thosewho contributed their time and expertise to the specification's development.References to third party material made in this specification are made in good faith.Pearsondoes not endorse,approve or accept responsibility for the content of materials,which maybe subject to change,or any opinions expressed therein.(Material may include textbooks,journals,magazines and other publications and websites.All information in this specification is correct at time of going to publication.ISBN9781446931172All the material in this publication is copyrightPearson Education Limited 2018Summary of Pearson Edexcel International GCSE inChemistry (4CH1)specification Issue 2 changesSummary of changes made between previous issue and thisPage numbercurrent issueSpecification point 4.16 has been amended.24The final statement in the section 'Assessment requirements'has been27reworded for clarity.Information on sample assessment materials has been added.2831Award)(4SS0)'has been removed from the section:Forbiddencombinations.The formatting of Appendices 2 and 3 has been updated.Also,the39-42names and titles in Appendix 2 have been updated.The title of Appendix 5 has been amended.45The subheading in the table of Appendix 5 has been corrected to Verb46preceding a command word'.If you need further information on these changes or what they mean,contact us viaour website at:qualifications.pearson.com/en/support/contact-us.html.