Chemical Changes Key Words Chemistry 0.0 / 5 ? ChemistryChemical patterns and reactivity seriesGCSEAQA Created by: cat.reviserCreated on: 16-01-18 20:35 Anode A positively charged electrode. 1 of 15 Cathode A negatively charged electrode. 2 of 15 Cryolite A compound of aluminium. 3 of 15 Displacement reaction A reaction in which a more reactive metal displaces a less reactive metal from a solution of its salt. 4 of 15 Dissociate To split up into ions. 5 of 15 Electrode An electrical conductor used in a cell. 6 of 15 Electrolysis The process by which an ionic compound is broken down into its elements using an electrical current. 7 of 15 Electrolyte The substance being broken down during electrolysis. 8 of 15 Extraction The process of obtaining / taking out / removing, e.g. obtaining a metal from an ore or compound. 9 of 15 Ionised Split up into ions. 10 of 15 Neutralisation Occurs when an acid reacts with exactly the right amount of base. 11 of 15 Reactivity series A list in which elements are placed in order of how reactive they are. 12 of 15 Reduction When a species gains electrons. 13 of 15 Strong acid An acid, such as hydrochloric acid, that is completely ionised in water. 14 of 15 Weak acid An acid, such as ethanoic acid, that is only partially ionised in water. 15 of 15
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