GCSE Chemistry Unit 2 Chemistry Unit 2, GCSE questions 3.5 / 5 based on 9 ratings ? ChemistryFunctional groups: Alkanes, alcohols, carboxylic acids and estersGCSEAll boards Created by: LolaCreated on: 22-05-12 21:07 What is an Isotope? atoms of the same element with the same number of protons, different number of neutrons 1 of 18 Electrolysis is: the splitting or decomposing of substances using electricity 2 of 18 A Nano-particle is one that is really small, true or false? True 3 of 18 The properties of graphite are: Each carbon atom has three bonds, made up of layers that can slide over each other, allowing the conduction of electricity 4 of 18 Ionic bonding is: The loss or gain of electrons 5 of 18 What is an acid? A substance that releases H+ ions 6 of 18 When you have a strong alkali, what happens? It dissociates in water, releasing OH- ions 7 of 18 In electrolysis, oxidation means? The loss of electrons 8 of 18 Acid + Base -> ? Acid + Base -> Salt + Water 9 of 18 If halide ions are present during electrolysis, a halide ion is produced, true or false? True 10 of 18 If a sulphate, nitrate or carbonate is present you get? O2 11 of 18 Ammonia is used for fertilisers, true or false? True 12 of 18 Halides are diatomic molecules, true or false? True 13 of 18 What conditions are used in the Haber process? 200 atms, 450 degrees and an iron catalyst 14 of 18 Why are high temperatures used but low pressures to favor forward exothermic reaction and keep costs down 15 of 18 When a reaction forms a solid it is called a: precipitation 16 of 18 You can increase the rate of reaction by: by increaing temp, surface area and concentration and using a catalyst 17 of 18 The activation energy is the minimum amount of energy required for a reaction to take place, true or false? True 18 of 18
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