Osmosis Demo

Mr. Anderson explains osmosis as the movement of water across a semi-permeable membrane from high to low concentration. He describes hypertonic solutions with higher solute concentrations and how water flows towards them. The video includes a molecular-level explanation and a classroom demo using dialysis tubing filled with corn syrup to illustrate osmosis in action.

What is the primary function of a semi-permeable membrane in osmosis?

• To block all molecules from passing

• To allow all molecules to pass through

• To facilitate the movement of solutes

• To allow only certain molecules to pass through

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

• It has no solutes

• It has a lower concentration of solutes

• It has a higher concentration of solutes

• It has an equal concentration of solutes

What happens to water molecules in an isotonic solution?

• They are absorbed by solutes

• They move only in one direction

• They move at an equal rate across the membrane

• They stop moving completely

In the classroom demonstration, what is the role of corn syrup in the dialysis tubing?

• It acts as a solvent

• It prevents osmosis

• It creates a hypertonic environment

• It dilutes the water

Why does water flow into the dialysis tubing filled with corn syrup?

• Because the corn syrup is less dense

• Because the water is hypertonic

• Because the water is isotonic

• Because the corn syrup has a higher solute concentration