1. Do now! Can you continue yesterday’s experiment?
Don’t forget lab coats and goggles!

2. Neutralisation

3. Neutralisation
What happens when we add an acid to an alkali?

4. Hydrochloric acid + sodium hydroxide

5. Hydrochloric acid + sodium hydroxide Sodium chloride + water

6. Hydrochloric acid + sodium hydroxide Acid + alkali Sodium chloride + water “salt” + water

7. Can you write the following in your books;
“Neutralisation is when an acid is added to an alkali to produce a neutral substance (called a “salt”) and water.

8. Examples of neutralisation

9. Homework!
Due Friday 6th November
Finish Neutralisation sheet

10. A world without acids?

11. Hazard Symbols

12. Hazard Symbols

13. Hazard Symbols

14. Hazard Symbols

15. Chemical Hazard Symbols
Corrosive – dissolves metals, stone and skin
Irritant – harms eyes and skin
Flammable – burns easily
Toxic – poisonous

16. Chemical Hazard Symbols
Corrosive – dissolves metals, stone and skin
Irritant – harms eyes and skin
Flammable – burns easily
Toxic – poisonous
In your groups can you design a symbol for each one. You have 10 minutes after which you will have to present and explain each symbol to the class.

17. Hazard Symbols
IRRITANT
FLAMMABLE
TOXIC