keyy words 0.0 / 5 ? ChemistryThe Periodic TableA2/A-levelOCR Created by: chandni gillCreated on: 15-04-14 10:38 period is a horizontal row of elements in the Periodic Table. Elements show trends in properties across a period. 1 of 6 periodicity is a regular periodic variation of properties of elements with atomic number and position in the Periodic Table. 2 of 6 thermal decomposition is the breaking up of a chemical substance with heat inot at least two chemical substances. 3 of 6 displacement reaction is a reaction in whicha more-reactive element displaces a less-reactive element from an aqueous solution of the latter's ions. 4 of 6 disproportionation is the oxidation and reduction of the same element in a redox reaction. 5 of 6 precipitaion reaction is the formation of a solid from a solution during a chemical reaction. Precipitatesare often formed when two aqueous solutions are mixed together. 6 of 6
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