Chemistry 4.0 / 5 based on 1 rating ? ChemistryGCSEAQA Created by: Yasmin ****Created on: 10-03-13 14:35 Group 1 reactivity... Increases as you go down 1 of 19 Halogens reactivity... Decreases as you go down 2 of 19 Exothermic energy change is ... Negative 3 of 19 Endothermic energy change is... Positive 4 of 19 Halogens form... Ionic bonds with metals 5 of 19 Transition metals have high... Densities and melting points 6 of 19 Cl2(g) + 2Kl(aq) = I2(aq) + 2KCl(aq) 7 of 19 Hard water is caused by... Calcium and magnesium ions 8 of 19 Temporary hardness is caused by... Hydrogencarbonate ion 9 of 19 Permanent hardness is caused by... Dissolved calcium sulfate 10 of 19 A reversible reactions is... Where the products of the reaction can react to produce the original reactants 11 of 19 If you raise the temperature, the endothermic reactions will... Increase to use up the extra heat 12 of 19 If you reduce the temperature, the exothermic reactions will... Increase to give out more heat 13 of 19 Ethanol + Ethanoic acid = Ethyl Ethanoate + water 14 of 19 Methanol + Propanoic acid = Methyl Proparnoate + water 15 of 19 Number of moles = Concentration X Volume 16 of 19 Mass = Number of moles X relative formula mass 17 of 19 Bond forming is... Exothermic 18 of 19 Bond breaking is... Exothermic 19 of 19
Comments
No comments have yet been made