Lab #6: Diffusion & Osmosis

Which of these will be used in a demonstartion by Ms. Zimmerman

• Sodium chloride

• methyl blue

• potassium permanganate

• maple syrup

Which of these will be used to test the effects of osmosis and plasmolysis?

• potato

• maple syrup

• elodea

How often should you observe the potassium permanganate/water solution?

• At the beginning of class only

• Throughout the lab class

• Al the end of class only

How often will you weigh your potato cores?

• Initially and every 5 minutes for 30 minutes

• Initially and every 10 minutes for 30 minutes

• Initially and every minute for 15 minutes

How will you make your potato cores?

• With a knife

• With a potato corer and a razor blade

• With a knife and a razor blade

Which two solutions will you place your two potato cores into?

• Tapwater and 5% salt solution

• Tapwater and 10% salt solution

• Taperwater and 20% salt solution

For the Effect of Temperature on Osmosis, you will need

• Beaker of room temperature water, beaker of hot water, beaker of ice water

• thermometer

• Dialysis tubing

• All of the above

Before starting the Effect of Temperature on Osmosis, the ice water should be

• 0 degrees C

• 3-5 degrees C

• 8-10 degrees C

Before starting the Effect of Temperature on Osmosis, the hot water should be

• 50-60 degrees C

• 70-80 degrees C

• 90 - 100 degrees C

The dialysis tubing should be

• 3 strips of 4.5 inches

• 3 strips of 6 inches

• 3 strips of 8.5 inches