2. Air and Water
• Guiding Questions :
– What are you inhaling right now ?
– How is water made safe for use ?
– How can air be separated ?

4. Composition of the Air

5. Chemical Test for Water

6. Making Water Safe to Drink 
• You have a 20cm3 sample of water – your task
is to ensure your water is fit to drink 
– Consider including ;
• Chemical testing for chlorides, sulphates
• Filtration
• Sedimentation
• Killing bacteria
• Convincing your public your water is safe to drink 

7. Air Pollutants
• C
• S
• N
• Take 0.5g of paper towel – burn using a crucible.
• Mass what is left.
• What mass of carbon dioxide did you release ?
• How many moles is that ?

8. Effects of Polutants
• Health
• Buildings

9. Task
• Create a colourful pictorially significant
chemically fantastic thought splurge.
• Must : Molecules of Pollution, their sources,
and how to reduce their production.
• Should : Show balanced chemical equations.
• Could : Make future predictions of
consequences to humans and their structures.