C4 - Key Facts 0.0 / 5 ? ChemistryPredicting and Identifying Reactions and ProductsGCSEOCR Created by: Mayah7113Created on: 01-10-19 21:01 Reduction the loss of oxygen from a substance and/or the gain of electrons 1 of 31 Oxidation gain of oxygen by a substance and/or loss of electrons 2 of 31 An acid releases... Hydrogen+ ions when dissolved in water 3 of 31 A base a substance that can neutralise and acid 4 of 31 Neutralisation a reaction between an acid and a base; it creates a salt and water 5 of 31 Weak acids are... partially ionised 6 of 31 Strong acids are... fully ionised 7 of 31 Electrolysis the process where a current is used to separate a substance 8 of 31 The anode the positively charged electrode 9 of 31 The cathode the negatively charged electrode 10 of 31 Positive ions are attracted to... the negative cathode 11 of 31 Negative ions are attracted to... the postive anode 12 of 31 Electroplating using electrolysis to cover an object with a metal 13 of 31 Alkali metals are... elements in group 1 14 of 31 What happens when alkali metals react with water? they forn an alkaline solution (hydroxide) 15 of 31 Properties of Group 1 metals soft and have a low density (float on water) 16 of 31 Group 1 - Trend of Reactivity it increases as you go down group 1 17 of 31 Why are alkali metals stored under oil? as they react with oxygen and water 18 of 31 Why do alkali metals have similar properties? they all have one electron on their outer shell 19 of 31 Halogens are.. elements in group 7 (17) 20 of 31 What colour is chlorine gas? green 21 of 31 What colour is bromine liquid? orange-brown 22 of 31 What colour is iodine solid? grey-black with purple vapour 23 of 31 What happens when group 1 & 7 elements react? salts are formed 24 of 31 Group 7 - Trend in Reactivity it decreases as you go down group 7 25 of 31 Displacement Reaction where a more reactive element kicks a less reactive element from a compound 26 of 31 Noble gases are... group 0 elements 27 of 31 How many electrons are on noble gas outer shells? 8; they have a complete outer shell of electrons 28 of 31 Group 0 - Trend in Attractive Forces they get stronger as you move down group 0 29 of 31 Oxygen test glowing splint relights 30 of 31 Chlorine test damp blue litmus paper turns red then white 31 of 31
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