Diffusion Quiz

How confident are you about your knowledge of diffusion after the lesson?

• I can explain it with examples AND say what impacts the rate of it!

• I can explain it with examples!

• I can define it and describe examples!

• I can define it!

What is the definition of diffusion?

• The movement of particles from an area of low concentration to an area of high concentration.

• The movement of particles from an area of high concentration to an area of low concentration.

In which direction does diffusion occur, from high to low concentrations or from low to high concentrations?

• from low to high concentrations

• from high to low concentrations

• in both directions simultaneously

• it does not occur

What impact does temperature have on the rate of diffusion?

• Temperature has no impact on the rate of diffusion.

• Temperature decreases the rate of diffusion.

• Temperature increases the rate of diffusion.

George, Isabelle, and Matilda are making a cup of tea. They noticed that the tea flavor they added in one corner of the cup quickly spread throughout the cup. Is this an example of diffusion, the movement of particles from low to high concentrations?

• True

• False

Imagine you are in a room where someone has just sprayed a perfume. How does the concentration gradient play a role in the spreading of the perfume's scent?

• It drives the movement of perfume molecules from the area of high concentration (near the spray) to areas of low concentration (other parts of the room)

• It causes the perfume molecules to move from areas of low concentration (other parts of the room) to the area of high concentration (near the spray)

• It has no role in the spreading of the perfume's scent

• It only affects the movement of water molecules in the air

What are the factors that can affect the rate of diffusion in a liquid?

• Pressure of the surrounding environment

• Time of day

• Temperature, concentration gradient, molecular size, and medium viscosity

• Color of the liquid

Explain how diffusion is essential for the survival of living organisms.

• Diffusion is not essential for the survival of living organisms

• Diffusion is essential for the survival of living organisms because it allows for the exchange of gases and nutrients at the cellular level.

What happens to the rate of diffusion when the concentration gradient increases?

• The rate of diffusion decreases.

• The rate of diffusion increases.

• The rate of diffusion remains the same.

How confident were you about your knowledge of diffusion before the lesson?

• I could give examples, explain it scientifically AND explain what impacts it!

• I could explain it with examples!

• I could define it and give examples!

• Never heard of it!