Exploring Diffusion and Osmosis Through Experiments

The video tutorial explains the concepts of diffusion and osmosis, illustrating how particles move through barriers and membranes. It includes experiments using iodine and cornstarch, and an egg with vinegar and corn syrup, to demonstrate these processes. An animation further clarifies how osmosis and diffusion occur in cells, highlighting the movement of water, nutrients, and waste. The experiments show how osmosis can cause changes in size and concentration, providing a practical understanding of these essential biological processes.

What is the process called when particles spread out to find more space?

• Diffusion

• Active transport

• Osmosis

• Filtration

In the first experiment, what substance is added to the water in the beaker?

• Salt

• Cornstarch

• Vinegar

• Iodine

What happens to the cornstarch inside the plastic bag after osmosis?

• It dissolves

• It remains unchanged

• It changes color

• It evaporates

Tags

NGSS.MS-PS1-2

What do the black dots represent in the animation of osmosis and diffusion in cells?

• Cell membranes

• Water particles

• Nutrients

• Waste particles

What is the role of the green arrow in the cell animation?

• Showing diffusion

• Showing osmosis

• Showing active transport

• Showing passive transport

What is used to represent a cell in the egg experiment?

• A balloon

• An egg

• A beaker

• A plastic bag

What happens to the eggshell when it is soaked in vinegar?

• It remains the same

• It changes color

• It dissolves

• It hardens

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

After soaking in vinegar, what is left of the egg?

• The shell

• The yolk

• The membrane

• The albumen

Tags

NGSS.MS-PS1-2

What is the circumference of the egg after soaking in vinegar?

• 12 cm

• 9 cm

• 14 cm

• 16.5 cm

Why does the egg look deflated after being soaked in corn syrup?

• Because of temperature change

• Because of chemical reaction

• Because of evaporation

• Because of osmosis and diffusion

Tags

NGSS.MS-LS2-3