Chemistry Triple AQA 0.0 / 5 ? ChemistryKey TermsGCSEAQA Created by: jodiehawkins_Created on: 14-06-16 17:47 What is Activation Energy? Represents the minimum energy needed to break bonds 1 of 22 What is Temporary hardness caused by? Hydrocarbons ions 2 of 22 Why is hard water good? Good for bones, teeth, and reducing the risk of heart disease 3 of 22 What is permanent hardness caused by? Dissolved calcium sulfate 4 of 22 Why is fluorine and chlorine added to water? Reduce tooth decay, and prevent diseases 5 of 22 Uses of Alcohols Perfume and Fuels 6 of 22 Going down Group 7 they become... Less reactive, and have higher boiling and melting points 7 of 22 Coloured Vapours of a-Fluorine b-Chlorine c-Bromine d-Iodine a-poisonous yellow gas b-poisonous dense green gas c-poisonous red-brown volatile liquid d-dark grey solid or purple vapour 8 of 22 Where is Nitrogen obtained from for the Haber Process? Air 9 of 22 Pressure of the Haber Process? 200atm 10 of 22 First 3 Carboxylic Acids Methonic Acid, Ethanoic Acid and Propanoic Acid 11 of 22 First 3 Alcohols Methanol, Ethanol, Propanol 12 of 22 Alcohols react with sodium to produce? Hydrogen and Alkoxide 13 of 22 Temp of The Haber Process 450oC 14 of 22 Ways to test for Positive ions Flame test and add NaOH 15 of 22 Why is fluorine and chlorine bad when too much is added to water? Chlorine can react to produce toxic by-products, and fluride can cause cancer and bone problems 16 of 22 What are Esters? Made of Alcohols and Carboxylic Acids, with a catalyst usually present 17 of 22 Ethanoic Acid+Ethanol=? Ethyl Ethnoate+Water 18 of 22 Where is Hydrogen obtained from for the Haber Process? Natural Gases 19 of 22 How do you test for Halides? Add dilute Nitric Acid, then silver nitrate 20 of 22 How can Ethanoic Acid be made? Oxidising Ethanol 21 of 22 Esters uses Flavourings, Aromas, Ointments and perfumes 22 of 22
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