C1 chemistry OCR 21st century 4.5 / 5 based on 7 ratings ? ChemistryC1GCSEOCR Created by: ElnicholsonCreated on: 04-11-15 16:08 The atmosphere was formed by carbon dioxide, water vapour and nitrogen being released by what? volcanoes 1 of 19 The oceans formed when the water vapour ____ when the Earth cooled. condensed 2 of 19 What percentage of nitrogen makes up the atmosphere? seventy eight 3 of 19 What percentage of oxygen makes up the atmosphere? twenty one 4 of 19 What percentage of argon makes up the atmosphere? one 5 of 19 The five pollutants in the air are carbon dioxide, carbon monoxide, sulphur dioxide, nitrogen oxide and what? particulates 6 of 19 Sulfur dioxide can cause what? acid rain 7 of 19 All substances are made up of tiny particles called? atoms 8 of 19 When atoms are joined together they make? molecules 9 of 19 In reactions, the mass of the reactants is equal to the mass of the? products 10 of 19 Whats the name of the fuel containing carbon and hydrogen? hydrocarbon 11 of 19 Is coal a hydrocarbon? no 12 of 19 When a hydrocarbon burns, the hydrogen atoms in the fuel combine with oxygen atoms from the air to make what? hydrogen oxide 13 of 19 Any reaction where oxygen is added is called a _____ reaction. oxidation 14 of 19 Reactions where oxygen is lost are called _____ reactions. reduction 15 of 19 When coal burns, you mostly get what? carbon dioxide 16 of 19 What removes carbon dioxide from the atmosphere, other than dissolving in water? photosynthesis 17 of 19 Carbon monoxide is produced if there isn't enough _____ when fuels burn. oxygen 18 of 19 What is produced when fuels burn incompletely? carbon particulates 19 of 19
Chemistry C7 Notes Completed + Highlighted (Excess) - OCR 21st Century, 2011 Specification 5.0 / 5 based on 1 rating Teacher recommended
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