DIFFUSION (2+3)

In what direction does a gas diffuse?

• Gases don't diffuse, they stay in one location
  

• From a high concentration to low concentration
  

• From a low concentration to high concentration
  

• Where ever they want, they are gases
  

Do gasses stop moving after they are completely mixed?

• True
• False

Does a gas that has a larger mass diffuse slower or faster than a gas with a
smaller mass?

• Slower
  

• Faster
  

How do gas molecules move?

• They do not move
  

• In a predictable pattern
  

• Randomly
  

Why does it take a long time for a smell to diffuse in a room?

• The molecules are just lazy and decide when they want to move or not
  

• It depends on the "strength" of the smell
  

• The molecules are colliding with air molecules
  

• The molecules are slow moving
  

For diffusion to occur, the particles must be free to move around. Which
states of matter can diffusion occur in?

• Solid

• Liquid

• Gas

• Solid and gas

• Liquid and gas

Diffusion is the movement of particles from an area of high __________ to
an area of low __________. Which word can fill both gaps in this sentence?

• volume
• temperature
• concentration
• pressure

Diffusion occurs when there is a difference in the concentration of a
liquid or gas from one area to another. If the difference in concentration is high,
then the rate of diffusion is __________

• high

• slow

• lower

Diffusion occurs when there is a difference in concentration from one area
to another. Which diagram shows the highest concentration of particles?

• 
• 
• 
• 

Diffusion in gases is __________ than diffusion in liquids because the
particles in a gas move faster than the particles in a liquid.

• slower
• negligible
• faster
• equal