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PMT Write your name here Surname Other names Pearson Edexcel Centre Number Candidate Number International Advanced Level Chemistry Advanced Subsidiary Unit 1: The Core Principles of Chemistry Friday 22 May 2015 – Morning Paper Reference Time: 1 hour 30 minutes WCH01/01 Candidates may use a calculator. Total Marks Instructions Use black ink or ball-point pen. Fill in the boxes at the top of this page with your name, centre number and candidate number. Answer all questions. Answer the questions in the spaces provided – there may be more space than you need. Information The total mark for this paper is 80. The marks for each question are shown in brackets – use this as a guide as to how much time to spend on each question. Questions labelled with an asterisk (*) are ones where the quality of