Osmosis and Its Demonstration

Mr. Anderson explains osmosis, the movement of water across a semi-permeable membrane from high to low concentration. He describes hypertonic and hypotonic solutions, where solute concentration differs, and the isotonic state, where water concentration is equal on both sides. The video includes a demonstration using dialysis tubing filled with corn syrup to show water flow due to osmosis.

What is the primary process described as the movement of water across a semi-permeable membrane?

• Evaporation

• Condensation

• Osmosis

• Filtration

In the context of osmosis, what does a hypertonic solution mean?

• It has more water molecules than solutes.

• It has a higher concentration of solutes.

• It has an equal concentration of solutes and water.

• It has a lower concentration of solutes.

What happens to water molecules in an isotonic condition?

• They stop moving completely.

• They move in one direction only.

• They move faster on one side.

• They flow back and forth at an equal rate.

What material is used in the osmosis demonstration setup to simulate a semi-permeable membrane?

• Dialysis tubing

• Plastic wrap

• Rubber sheet

• Glass tube

In the osmosis demonstration, what is the solute used inside the dialysis tubing?

• Salt

• Corn syrup

• Vinegar

• Baking soda

What is the role of distilled water in the osmosis demonstration?

• It acts as a solute.

• It is the hypotonic solution.

• It is the hypertonic solution.

• It is used to dissolve the corn syrup.

Which direction does water flow in the osmosis demonstration?

• From the corn syrup to the distilled water

• From the distilled water to the corn syrup

• In both directions equally

• It does not flow

What is the purpose of tying the dialysis tubing in the osmosis demonstration?

• To prevent water from entering

• To keep the corn syrup inside

• To allow air to escape

• To make it float

What visual effect might be observed during the osmosis demonstration?

• Water level decreasing on both sides

• Water level remaining constant

• Water level rising on the corn syrup side

• Water level rising on the distilled water side

What is the significance of the semi-permeable membrane in osmosis?

• It dissolves in water.

• It allows only certain molecules to pass.

• It blocks all molecules from passing.

• It allows all molecules to pass through.