Diffusion

What is the movement of particles in gases?

• Random and constant motion

• Upward and downward motion

• Linear and predictable motion

• Circular and spiral motion

Explain how the particles in gases move in relation to diffusion.

• Gases move in a circular pattern within their container.

• Gases move randomly and collide with each other and the walls of their container.

• Gases move in a straight line without colliding with anything.

• Gases move in a coordinated manner following a specific path.

Tags

NGSS.HS-PS3-2

What factors affect the rate of diffusion in gases?

• Density, state of matter, and boiling point

• Atomic number, solubility, and viscosity

• Temperature, molecular weight

• Color, pressure, and volume

How does temperature affect the rate of diffusion in liquids?

• Temperature increases the rate of diffusion in liquids.

• Temperature only affects the color of the liquid, not the rate of diffusion.

• Temperature decreases the rate of diffusion in liquids.

• Temperature has no effect on the rate of diffusion in liquids.

What are some common diffusion experiments conducted in the laboratory?

• Agar cubes, perfume in a room, and food coloring in water

• Mixing oil and water

• Burning a candle

• Baking a cake

Tags

NGSS.HS-LS2-3

Describe an experiment to show the diffusion of liquids using food coloring in water.

• Mix food coloring with oil and observe the color spreading

• Put food coloring on a plate and watch it evaporate

• Add food coloring to a glass of milk and observe the color change

• Add a few drops of food coloring to a glass of water and observe the spreading of the color throughout the water.