Classifying materials · Grade 9
Distillation
ChemAI · Worksheet
NameClassDate
Aim
Get pure water out of a coloured salt solution.
Before you start: what do you predict will happen? Why?
What you do
| Step | What I observed | |
|---|---|---|
| 1 | Heat the flask. | |
| 2 | Watch the thermometer at 100 °C and the first drops in the receiver (×5). | |
| 3 | Collect 10 mL. Why is the distillate colourless while the flask gets darker blue? |
Questions
- Write a word or symbol equation for one reaction you observed.
- Explain your most important observation using particles, ions or energy.
- Was your prediction right? What would you change to get a more reliable result?