4.9 To conduct any activity to demonstrate osmosis.

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Presentation transcript:

4.9 To conduct any activity to demonstrate osmosis

Before you start make a copy of this Table of results Tube contents TurgidityMass (g) at startafter test periodat startafter test period Sucrose solution Distilled water

Step 1 Soften the lengths of visking tubing by soaking them in water.

Step 2 Knot one end of each piece of tubing.

Step 3 Half fill one piece of visking tubing with sucrose solution.

Step 4 Control: half fill the other piece of visking tubing with distilled water.

Step 5 Eliminate as much air as possible. Knot the open end. Wash and pat dry.

Step 6 Tie the two ends of the visking tubing together.

Step 7 Observe the turgidity and record the mass of each piece of tubing.

Step 8 Hang each tube from a glass rod into a beaker of distilled water. Leave for 15 minutes.

Step 9 Remove the tubing, dry and re-weigh. Observe the turgidity.

Expected result

Results Tube contents TurgidityMass (g) at startafter test periodat startafter test period Sucrose solution Distilled water

END