1. Lesson Starter. Q: Four groups measured the height of their table.
Their results were: 92cm, 103cm, 110cm, and 95cm.
Calculate the average height of the tables.

2. Calculations in science.
Aims:
Carry out chemical reactions and observe changes in appearance.

3. You should be able to do these by the end of the lesson!
Success Criteria
WHAT CAN I DO?
Red
Amber
Green
Work safely in the Science Lab obeying safety rules.
Measuring with precision appropriate to the technique.
Observe carefully what happens in experiments.
Identify a chemical reaction by a change in appearance in a substance.
You should be able to do these by the end of the lesson!

4. Chemical Reactions
A chemical reaction occurs when a new substance is formed. It cannot be reversed.
Evidence of a chemical reactions is:
Gas
Precipitate (solid forming)
Colour change
Energy change (eg. Heat or light being given off)

5. Physical Change
A physical change alters the form of a substance, but does not change it to another substance.
Water boiling
Making orange juice

6. Mixing Chemicals
Station 1 – Mix 5ml of Lead Nitrate with 5ml of Potassium iodide in a test tube. Write down what you observe.
Station 2 – Mix one spatula of marble chips with 5ml of hydrochloric acid in a test tube. Write down what you see.
Station 3 – Mix 3ml of olive oil with 5ml of water. Write down what you see.
Station 4 – Mix one spatula of copper filings with 5ml of water. Write down what you see.

7. You should be able to do these by the end of the lesson!
Success Criteria
WHAT CAN I DO?
Red
Amber
Green
Work safely in the Science Lab obeying safety rules.
Measuring with precision appropriate to the technique.
Observe carefully what happens in experiments.
Identify a chemical reaction by a change in appearance in a substance.
You should be able to do these by the end of the lesson!

8. Chemical Reaction or Physical Change?
Cutting Paper
Physical Change

9. Chemical Reaction or Physical Change? Chemical or Physical Change?
Ice Melting
Physical Change

10. Chemical Reaction or Physical Change? Chemical or Physical Change?
Toast Burning
Chemical Change

11. Chemical Reaction or Physical Change? Chemical or Physical Change?
Rocket Fuel Burning
Chemical Change

12. Chemical Reaction or Physical Change? Chemical or Physical Change?
Sawing Wood
Physical Change

13. Chemical Reaction or Physical Change? Chemical or Physical Change?
Baking cakes
Chemical Change

14. Chemical Reaction or Physical Change? Chemical or Physical Change?
Frying an egg
Chemical Change