Paper 6 structured question: Osmosis
Paper 6Alternative to PracticalPractical1 marks
Method
Osmosis Experiment Method
1. Cut equal-sized potato pieces. 2. Prepare salt solutions of varying concentrations. 3. Place potato pieces in each solution for 30 minutes. 4. Measure and record the mass of each piece before and after immersion.
| Concentration (mol/L) | Initial Mass (g) | Final Mass (g) |
|---|---|---|
| 0.0 | 5.0 | 5.5 |
| 0.5 | 5.0 | 4.8 |
| 1.0 | 5.0 | 4.0 |
| 1.5 | 5.0 | 3.5 |
- a[1]
State the independent variable in this experiment.
Aim for approximately 1 distinct marking point.