Acids and Alkalis Chemistry 0.0 / 5 ? ChemistryAcids, bases and saltsIGCSEEdexcel Created by: NikkaedhanaaCreated on: 07-10-21 20:12 Acid A substance containing H+ ions in solution which can be donated to a base. They have a pH of less than 7. 1 of 13 Alkali A water soluble base. They contain OH- ions and have a pH of more than 7. 2 of 13 Base A species which accepts the H+ ion and reacts with an acid to form a salt. 3 of 13 Salt A substance formed when the H+ ion of an acid is replaced by a metal ion or ammonium. 4 of 13 Soluble Can dissolve in a named liquid. 5 of 13 Insoluble Cannot dissolve in a named liquid. 6 of 13 Indicator A substance which changes colour when added to acids or alkalis. 7 of 13 Neutralisation The reaction of an acid with an alkali to form a salt. Acid + alkali → salt + water H+(aq) + OH-(aq) → H2O(l) 8 of 13 Precipitate An insoluble solid formed from the reaction of two solutions (observed as the solutions turn cloudy). 9 of 13 Precipitation A reaction forming a precipitate. 10 of 13 Metal + Acid Salt + Hydrogen 11 of 13 Metal Oxide + Acid Salt + Water 12 of 13 Acid + Metal Carbonates Salt + Carbon Dioxide + Water 13 of 13
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