1. Do now!
Can you take a look at your evaporating dishes with your copper sulphate in?

2. Last lesson Writing word equations for making salts by neutralisation
Making Copper sulphate

3. Making Copper sulphate

4. Acid + Base “salt” + water
Hydrochloric acid + sodium hydoxide sodium chloride + water
Sulphuric acid + Potassium hydroxide Potassium sulphate + water
Nitric acid + ammonia ammonium nitrate + water
In general, hydrochloric acid makes a chloride, nitric acid makes a nitrate, and sulphuric acid makes a sulphate.

5. Today’s lesson
An indicator exercise
The reactivity series

6. Indicators
Indicators are chemicals (coloured dyes) which change colour in acids and alkalis.

7. Universal Indicator
To measure pH, we need an indicator that has a different colour for each value of pH
Universal Indicator

8. Mission impossible?

9. Mission impossible?
Your task is to produce the colours of the rainbow in 6 test tubes using only Universal Indicator liquid and the acids and alkalis provided.

10. Mission impossible?

11. Mission impossible?
The first group to succeed will receive 3 house marks each

12. Don’t forget safety glasses!
Mission impossible?
Don’t forget safety glasses!
Use SMALL amounts – it’s easier!

13. Mission impossible?
Go!

14. Could you quietly and sensibly gather your stools around Mr Porter?
Reactivity Series
YouTube - Rubidium and Cesium in water
YouTube - Alkali metals in water ( Not the braniac version )
YouTube - Brainiac Alkali Metals
Alkali Metal Bangs
Could you quietly and sensibly gather your stools around Mr Porter?

15. Reactivity Series

16. Reactivity Series potassium sodium lithium calcium magnesium aluminium
zinc
iron
tin
lead
copper
silver
gold
Can you compose a sentence to help you remember this order?
(important)