y8 Diffusion

What is the definition of diffusion?

• Movement of particles from areas of high to areas of low concentration

• Movement of particles that requires energy

• Movement of particles from areas of low to areas of high concentration

• Movement of particles in a solid state

Which states of matter can diffuse?

• Liquids and gases

• Solids and liquids

• Only liquids

• Only solids

What is required for diffusion to occur?

• High temperature

• Energy input

• A concentration gradient

• A solid state

Which factor affects the rate of diffusion?

• Shape of the container

• Size of the particle

• Type of liquid

• Color of the particles

Which factor does NOT affect the rate of diffusion?

• Size of particles

• Temperature

• Concentration gradient

• Color of the particles

What happens to diffusion at higher temperatures?

• It slows down

• It stops completely

• It speeds up

What is Brownian motion?

• Movement of particles in a solid

• Random movement of particles due to collisions

• A type of diffusion in liquids

• Movement of gases in a vacuum

How do earthworms exchange gases?

• Through gills

• Through lungs

• Through their skin

• Through their mouth

What is the effect of a steep concentration gradient on diffusion?

• It speeds up the process

• It has no effect

• It slows down the process

• It stops the process

What is the primary reason gases diffuse faster than liquids?

• Gases are more concentrated

• Gases have more kinetic energy