Chemistry: Unit 1 Module 3 0.0 / 5 ? ChemistryThe Periodic TableASOCR Created by: Megan FoxenCreated on: 22-02-14 13:11 Period A horizontal row of elements in the Periodic Table. Elements show trends in properties across a period 1 of 6 Periodicity A regular periodic variation of elements with atomic number and position in the Periodic Table 2 of 6 Thermal Decomposition The breaking up of a chemical substance with heat into at least two chemical subatances 3 of 6 Displacement Reaction A reaction in which a more reactive element displaces a less reactive element from an aqueous solution of the latter's ions 4 of 6 Disproportionation The oxidation and reduction of the same element in a redox reaction 5 of 6 Precipitation Reaction The formation of a solid from a solution during a chemical reaction 6 of 6
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