1. What is the Morse code for S.O.S?
Precipitates
Developing: Students can set up an experiment safely
Secure: Students can carry out and record results from an experiment
Exceeding: Students can write a conclusion for what they found
Entrance Activity
What is the Morse code for S.O.S?
Key Words – Tool Box
Lead nitrate
Potassium Iodide
Precipitate
Observation
Conclusion

2. Task 1- Lead Nitrate and Potassium Iodide
Learning Activity
Task 1- Lead Nitrate and Potassium Iodide

3. Precipitate Key Word Alert! Definition
A precipitate is an insoluble solid that is formed in a solution (liquid). Precipitates can be of various colours depending on what chemical react together.

4. Safety First!
Learning Activity

5. Instructions Learning Activity Instructions:
1. Place 1 spatula of lead nitrate into a 100 cm3 beaker
2. To this beaker add 1 spatula of potassium iodide
3. With a glass stirring rod, stir these two solids, observe any changes
4. Using a dropping pipette add 5 cm3 of water to the beaker and stir again
5. Record the colour of the precipitate

6. Learning Activity
Why did this happen?

7. Learning Activity
Knowledge Check!

8. Conclusion! Learning Activity
Write a conclusion that is half a page long about your experiment. Answer the questions below and include diagrams where possible.
Explain the data using the scientific ideas you have learned.
You must link the science to your data – why does increasing the distance that the air hole is open have that effect?
What extra data would give you more confidence in your hypothesis?
What would you do if you could do the practical again and collect more data?

9. What is the Morse code for S.O.S?
Precipitates
Developing: Students can set up an experiment safely
Secure: Students can carry out and record results from an experiment
Exceeding: Students can write a conclusion for what they found
Entrance Activity
What is the Morse code for S.O.S?
Key Words – Tool Box
Lead nitrate
Potassium Iodide
Precipitate
Observation
Conclusion