Lesson Title: pH testing,Lesson No: 4,Unit Title: Acids and alkalis ,Unit No:7e ,NC Ref: ,Objectives: pH tells us how acidic/alkaline something is. Universal indicator is a mixture of many indicators and gives a range of colours pH 7 is neutral, above is alkaline, below is acidic Diluting the acid or alkali will affect the pH ,Lesson outline: Review that indicators tell us if something is acidic or alkali. Some acids are more acidic than others. Use the pH scale. Exp Sci p62 copy chart Pupils test a selection of solutions around the lab for the colour chart value (pH). Sheet 7Ed/1 instead of name of substance put the letter and they have to find the full range More about indicators. Sheet 7Ed/4 and 7Ed/5 Plenary: Colour card quiz - selection of coloured cards given to pupils and they hold up the correct colour to answer questions ,Homework: