AQA GCSE Chemistry Unit 1 A quiz covering all types of topics from the AQA Chemistry syllabus. 3.5 / 5 based on 6 ratings ? ChemistryGCSEAQA Created by: Ayman IlhamCreated on: 10-01-13 19:39 What is a compound? A group of different atoms chemically bonded together 1 of 27 What is the chemical symbol for Potassium? K 2 of 27 The element Roentgenium (Rg) has 111 electrons. What is its atomic number? 111 3 of 27 Complete this sentence: Limestone is mainly made of the compound __________. Calcium Carbonate 4 of 27 What is a use of limestone? To make cement for construction 5 of 27 What is a metal ore? A rock that contains enough of a metal to make it profitable to extract 6 of 27 Why are alloys of aluminium suitable for aeroplanes? Aluminium has a low density 7 of 27 What is the melting point of Titanium? 1660 degrees Celsius 8 of 27 Why is copper useful in the industry? It is an excellent conductor of electricity 9 of 27 Where in the periodic table are the transition metals found? The middle 10 of 27 What is the process used to break down crude oil into smaller hydrocarbons? Fractional Distillation 11 of 27 A molecule of diesel has 23 carbon atoms. How many hydrogen atoms are in this molecule? 48 12 of 27 What is the term for "unsaturated hydrocarbons"? Alkenes 13 of 27 Complete this sentence: Longer chain hydrocarbons are __________. More viscous 14 of 27 What is the main product of incomplete combustion? Carbon Monoxide 15 of 27 Why do some fuels (i.e. coal) contribute to acid rain? They contain impurities like sulfur 16 of 27 What is a disadvantage of using biofuels? More farmland could be used for growing crops for biofuels rather than food 17 of 27 What colour does unsaturated fat turn bromine water? Colourless 18 of 27 What is a catalyst? A substance that speeds up a reaction without being used up 19 of 27 Which has more energy? Vegetable oil 20 of 27 Why are unsaturated fats hydrogenated? To harden them for use in spreads 21 of 27 What do emulsifiers do? They stop oil and water separating out into layers 22 of 27 What causes plate boundaries to move? Convection Currents 23 of 27 Which was the most abundant gas in the Earth's early atmosphere? Carbon Dioxide 24 of 27 How did the oceans form on Earth? Water Vapour in the early atmosphere condensed 25 of 27 How long ago do scientists believe life began? 3.4 billion years 26 of 27 What did Miller-Urey experiment prove? That organic compounds can be made from non-biological material 27 of 27
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