Experiment to demonstrate osmosis (LC 2026) (Leaving Cert Biology): Flashcards
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Practise the cards
12 cards from this deck
What moves during osmosis?
What moves during osmosis?
Water molecules
Direction of water movement in osmosis
Direction of water movement in osmosis
From high to low water concentration
What does osmosis occur across?
What does osmosis occur across?
Semi-permeable membrane
Sugar solution concentration in osmosis experiment
Sugar solution concentration in osmosis experiment
80%
Duration of osmosis experiment
Duration of osmosis experiment
15 minutes
Control substance in osmosis experiment
Control substance in osmosis experiment
Distilled water
Why soak visking tubing in water?
Why soak visking tubing in water?
To soften it
Starting mass of sugar solution tube
Starting mass of sugar solution tube
10.8g
Ending mass of sugar solution tube
Ending mass of sugar solution tube
15.2g
Final turgidity of sugar solution tube
Final turgidity of sugar solution tube
Fully turgid
Mass change of distilled water (control) tube
Mass change of distilled water (control) tube
No change (10.8g)
Why did sugar solution tube gain mass?
Why did sugar solution tube gain mass?
Water moved into the tube by osmosis
