Osmosis Lab

What is osmosis?

• The movement of molecules from low to high concentration across a semi-permeable membrane

• The movement of water molecules from low to high concentration across a semi-permeable membrane

• The equal movement of water molecules across a semi-permeable membrane

• The movement of water molecules from high to low concentration across a semi-permeable membrane

Hypertonic

• High solute, low water

• Low solute, high water

• Equal solute & water

How much water was used in each beaker?

• 1 ml

• 10 ml

• 100 ml

• 1 L

How much sugar was poured into Beaker B?

• 0 g

• 50 g

• 100 g

• 150 g

Tags

NGSS.MS-PS1-2

How much sugar was poured into Beaker D?

• 0 g

• 50 g

• 100 g

• 150 g

Tags

NGSS.MS-PS1-2

What was the solute concentration for the solution in the dialysis tubes that were placed in beakers B-E.

• 0 %

• 5 %

• 10 %

• 15 %

How long were the dialysis tubes left in the beakers?

• 10 hr

• 24 hr

• 10 min

• 24 min

Which dialysis tubes had little or no change in mass after the 24-hour period?

• "A", "C", "E"

• "C", "D"

• "A", D"

• "B"

Tags

NGSS.MS-PS1-2

Why was pure water used as the control group?

• The control group provides standard for comparison for the experimental group

• The control group represents a real cell because real cells contain water

• The control group was not necessary

• All of the above

Tags

NGSS.HS-ESS2-5

Why didn't the mass of dialysis tubes "A" and "D" change significantly over the 24-hour time frame?

• The dialysis tubing material was clogged

• The dialysis tubes were placed in an isotonic solution

• The pressure of the dialysis tubing membrane stabilizes the flow of water

• Water was poured into the dialysis tubes the following morning

Tags

NGSS.HS-ESS2-5