Chemistry Unit 2 The Halogens and reactions of the halogens 1.5 / 5 based on 4 ratings ? ChemistryASAll boards Created by: Charlotte LeeCreated on: 11-05-12 22:19 Fluorine - Pale yellow - Gas ELECTRONEGATIVITY Chlorine - Green - Gas INCREASES Bromine - Red/Brown - liquid UP THE Iodine - Grey - Solid GROUP 1 of 2 Catalysts A catalyst increases the rate of reaction by providing an alternative reaction pathway with a lower activation energy. 2 of 2
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