OFFICIAL SUMMER 2025 PEARSON EDEXCEL Pearson Edexcel Level GCE Advance Subsidiary In Chemistry (8CH0) Paper 01: Core Inorganic and Physical Chemistry MERGED QUESTION PAPER + MARK SCHEME

OFFICIAL SUMMER 2025 PEARSON EDEXCEL Pearson Edexcel Level GCE Advance Subsidiary In Chemistry (8CH0) Paper 01: Core Inorganic and Physical Chemistry MERGED QUESTION PAPER + MARK SCHEME 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 Chlorine, Cl2 , and silicon tetrachloride, SiCl4 , are covalently bonded molecules with low boiling temperatures. (a) The definition of electronegativity is the ability of an atom to attract A a single bonding electron from a covalent bond B a pair of electrons from a covalent bond C electron density from a neighbouring atom D two electrons from a positive ion (b) Draw a dot-and-cross diagram of silicon tetrachloride, showing outer shells of electrons only. Use crosses (×) for silicon electrons and dots (•) for chlorine electrons.