Lesson Title: Acid, Alkali or Neutral,Lesson No: 3,Unit Title: Acids and Alkalis ,Unit No: 7e,NC Ref: ,Objectives: Substances that are neither acids or alkalis are neutral. Indicators change colour in different solutions Make your own indicator ,Lesson outline: Starter: Introduce alkalis as the opposites of acids Remind pupils that alkalis and acids are chemical opposite Have three beakers at the front. One contains an acid, one an alkali and one is fresh water. Pupils use Litmus to tell the difference Litmus is an indicator, it tells us if something is acid or alkali Pupils make indicator from red cabbage. Find the colours when in weak and strong acid/alkali. Sheet 7Ec/1 (easy), 7Ec/2 (middle) and 7Ec/3 (harder). Plenary: SPLAT with keywords or Exp Sci p60 Qu 1-4 ,Homework: 7Ec/4, 7Ec/7 and 7Ea/4 or /5 - research acids, alkalis and indicators in the home