2022 pearson june booklet + mark scheme Edexcel International GCSE (9–1) 4CH1/1CR 4SD0/1CR Chemistry UNIT: 4CH1 Science (Double Award) 4SD0 PAPER: 1CR

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Answer ALL questions. Some questions must be answered with a cross in a box . If you change your mind about an answer, put a line through the box and then mark your new answer with a cross . 1 (a) ... The diagram represents an atom of an element. proton neutron electron Use numbers from the box to complete the table. You may use each number once, more than once or not at all. 2 4 5 9 10 (4) Atomic number of this atom Mass number of this atom Period number of this element Number of electrons in the 2+ ion formed from this atom [Show More]

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