Lesson Title: How corrosive are acids?,Lesson No: 2 ,Unit Title: Acids and alkalis ,Unit No: 7Ea,NC Ref: ,Objectives: Different acids have different strengths. Some acids are more corrosive than others. Planning a fair test with multiple input variables and outcomes. ,Lesson outline: Starter: look up hazchem cards of chemicals in today's lesson Using Planning post-it poster, what will affect how corrosive an acid is. Input: type of acid and strength (molarity) etc Outcome: how fizzy, time taken for reaction to stop etc Carry out experiment - GOGGLES (Half class do strength of acid and half do type of acid) Plenary: Discuss conclusions ,Homework: 7Eb/4 (easy) or 7Eb/5 (harder) both need 7Eb/6 for reference - real life use of Hazchem code ,Resources: Hydrochloric acid, sulphuric and nitric acids, magnesium ribbon. 1M, 0.5M, 0.1M and 0.01M of one acid type Planning poster, post-it notes, hazard cards