BI-976
Diffusion and osmosis experiments
Biology · Secondary 3 · Medium · Diffusion and osmosis experiments
A student sets up an osmosis experiment using potato strips. To improve accuracy, she decides to measure percentage change in mass instead of change in mass. Why is this better?
- It removes the need to dry the strips.
- It makes the readings larger and easier to see.
- It allows fair comparison despite different starting masses.
- It prevents errors from the balance used.
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