Lesson Cover – pupil instructions You will need to use your iPad. Read through the presentation carefully. Complete and then print the sheet listing ‘everyday acids’ (sheet 4) Read the ‘hyperlinked’ news article about John George Haigh Imagine that you are a news reporter – investigate headlines from the time and then write your own news report (using word or publisher) of the incident - refer to pages 6 and 7 for hints. Note that £4000 in 1944 is the equivalent of about £160000 today If you have time print out and stick the news article into your prep book If you finish find answers to the squares on page 9 – extend the table on page 10 for your answers

What’s the link?

Acids at home Acids have a sour taste, like vinegar, which contains ethanoic acid, and lemons, which contain citric acid. These are safe to use in food, but they can still hurt if they get into a cut or into your eyes. Other acids you will find at home are carbonic acid in fizzy drinks, tannic acid in tea and ascorbic acid which is vitamin C, found in fruit and vegetables.

What are acids used for in everyday life?? Everyday acids

Acid bath murderer Read the following article News article How did John George Haigh use acid to try and get away with murder?

Write a headline and brief news report on the John Haigh case You must include You could include A catchy headline Knowledge of acids An image / drawing

Keywords/ facts to include 6 victims several weeks Sulphuric acid Dentures, red plastic handbag and 3 human gallstones remained Corrosive All DNA evidence destroyed Dangerous method of body disposal 27 gallons needed

A substance with a pH of 7 would be??? Chemical formula for sodium hydroxide NaOH A substance with a pH of 3 would be ???? acidic A substance with a pH of 7 would be??? Netural Acid + metal carbonate → Salt + water + carbon dioxide CaCO3 is the formula for what? Calcium carbonate What is HCl Hydrochloric acid Acid + Alkali → A substance with a pH of 12 would be????? alkali What is formed in a neutralisation reaction? Salt + water Salt + water Nitric acid HNO3 is the formula for which acid? Teacher checks answer Give 2 examples of substances that are alkali Acids have a pH of ?? 1 - 6 Describe what happens in a neutralisation reaction Acid an alkali react together to form a salt and water H2SO4 The formula of sulphuric acid is . . . What is the formula for hydrochloric acid? HCl Nitrate salts are made from which acid? teacher checks answer Give 1 example of a substance that is acidic Green a neutral substance turns universal indicator ………… What is the name of the compound with the formula CuO ? Copper oxide Potassium hydroxide KOH is the formula for??? Nitric acid (HNO3) red Universal indicator turns ……. In an acid Purple/blue Universal indicator turns ……… in an alkali A neutral substance has a pH of ??? 7 sulphates What is the name of the salt that is made from sulphuric acid? Nitrogen monoxide, Nitrogen dioxide and Sulfur dioxide Acid rain is caused by which pollutant gases?

Challenge What is the chemical formula for Sodium Hydroxide? The chemical formula is ……… What is HCl? 2 Exampled of Alkalis Etc…….. …….. ….