C4e - The Group 7 Elements 4.0 / 5 based on 1 rating ? ChemistryChemical patterns and reactivity seriesGCSEOCR Created by: EsmeCreated on: 21-11-12 18:23 What are halogens? The five non-metals in Group 7. 1 of 11 What are the names of the halogens? Flourine, chlorine, bromine, iodine, astatine. 2 of 11 At room temperature what is chlorine? A green gas. 3 of 11 At room temperature what is bromine? An orange liquid. 4 of 11 At room temperature what is iodine? A grey solid. 5 of 11 What is iodine used as? An antiseptic for sterilising wounds. 6 of 11 What is chlorine used for? Sterilising water, making pesticides and making plastics. 7 of 11 What do halogens react with alkali metals to make? Metal halides. 8 of 11 What is displacement? When a more reactive molecule takes the place of a less reactive molecule in a reaction. 9 of 11 Describe astatine? Semi-metallic, radioactive, small amounts are found naturally, very unstable. 10 of 11 What is the general process of when an electron is gained? Reduction. 11 of 11
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