Acids, Bases and Salts 0.0 / 5 ? ChemistryAcids, bases and saltsGCSEAQA Created by: owen1234Created on: 04-12-15 11:46 pH scale A measure of the acidity or alkalinity of a solution. pH 1 is strongly acidic pH 7 is neutral and pH 14 is stronly alkaline. 1 of 23 Acidic Having the properties of an acid 2 of 23 Alkaline Having the properties of an alkali 3 of 23 Indicator A substance that changes colour on its pH 4 of 23 Calibrated Marked with a scale, so that the readings can be taken 5 of 23 Resolution The smallest change in that value that an instrument can detect 6 of 23 Bases A compound, usually a metal oxide or metal hydroxide, that reacts with an acid to neutrilise it 7 of 23 Soluble Able to dissolve in a particular solvent, usually water 8 of 23 Alkali A base that dissolves in water to form hydroxide ions and give a solution of pH greater than 7 9 of 23 Hydroxide ions An negatively charged ion made up of hydrogen atom and an oxygen atom. 10 of 23 Strong alkalis An alkali that splits completely into ions in solution, producing a high concentration of hydroxide ions. 11 of 23 Weak alkali An alkali that does not completely split into its component ions in solution, and produces a low concentration of hydroxide ions. 12 of 23 Hydrogen ions A hydrogen atom without its electron; a proton. 13 of 23 Strong acids An acid that splits completely into ions in solution, producing a high concentration of hydrogen ions. 14 of 23 Weak acids An acid that does not completely splits into its component ions in solution, and produces a low concentration of hydrogen ions. 15 of 23 State symbol Symbols used in balanced equations to show the physical state of each reactant and product; (s) solid (l) liquid (g) gas or (aq) aqueous solution. 16 of 23 Neutrilisation reactions A chemical reaction between an acid and alkali (or bases) that produces water and a neutral salt 17 of 23 Ionic An electrically charged particle, containing ndifferent numbers of protons and electrons. 18 of 23 End-point The point in a tritation at which the two reactants have reacted completely but none of either is left over 19 of 23 Fungicide A chemical compound used to kill or reduce fungal growth 20 of 23 Precipitate An insoluble solid formed by a chemical reaction, such as the reaction between two soluble salts 21 of 23 Precipitation reaction A reaction in which an insoluble solid is fromed 22 of 23 Fertilisers A compound added to soil to replace the minerals used up by the plants 23 of 23
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