GCSE CHEMISTRY Higher Tier Paper 1

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The maximum mark for this paper is 100. • The marks for questions are shown in brackets. • You are expected to use a calculator where appropriate. • You are reminded of the need for good Engl... ish and clear presentation in your answers. Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature I declare this is my own work. GCSE CHEMISTRY Higher Tier Paper 1 H2 *02* IB/M/Jun21/8462/1H Do not write outside the 0 1 This question is about carbon and its compounds. box Fullerenes are molecules of carbon atoms. The first fullerene to be discovered was Buckminsterfullerene (C60). 0 1 . 1 What shape is a Buckminsterfullerene molecule? [1 mark] 0 1 . 2 Give one use of a fullerene. [1 mark] Propanone is a compound of carbon, hydrogen and oxygen. Figure 1 shows the dot and cross diagram for a propanone molecule. Figure 13 *03* Turn over ► IB/M/Jun21/8462/1H Do not write outside the 0 1 . 3 Complete Figure 2 to show a propanone molecule. box Use a line to represent each single bond. Use Figure 1. [1 mark] Figure 2 0 1 . 4 Determine the molecular formula of propanone. Use Figure 1. [1 mark] Molecular formula = 0 1 . 5 Propanone is a liquid with a low boiling point. Why does propanone have a low boiling point? [1 mark] Tick () one box. The covalent bonds are strong. The covalent bonds are weak. The intermolecular forces are strong. The intermolecular forces are weak.4 *04* IB/M/Jun21/8462/1H Do not write outside the box 11 0 1 . 6 Figure 3 represents the structure of graphite. Figure 3 Explain why graphite is: • a good electrical conductor • soft and slippery. You should answer in terms of structure and bonding. [6 marks]5 *05* Turn over ► IB/M/Jun21/8462/1H Do not write outside the Turn over for the next question box DO NOT WRITE ON THIS PAGE ANSWER IN THE SPACES PROVIDED6 *06* IB/M/Jun21/8462/1H Do not write outside the 0 2 This question is about atomic structure and the periodic table. box Gallium (Ga) is an element that has two isotopes. 0 2 . 1 Give the meaning of ‘isotopes’. You should answer in terms of subatomic particle [Show More]

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