A

Select the 4 correct answers. A particle _____.

• can be a solid.

• can be a liquid.

• can be a gas.

• has random motion.

• remains stationary.

Tags

NGSS.MS-PS1-4

Which diagram best shows the end result of diffusion?

• F
• G
• H
• J

A student put a few drops of lemon juice into an uninflated balloon.The student tied a knot in the balloon, placed it in a shoe box, and covered it with a lid. The following day, the student opened the box and was able to smell lemon in the box. Through what process were molecules able to pass through the balloon?

• respiration
• fermentation
• osmosis
• diffusion

Tags

NGSS.MS-PS1-2

Diffusion is the movement of molecules from an area of _____ concentration to an ______ concentration

• High, low

• Low, high

• Low, low

• High, high

If there is more oxygen in the blood than in an organ, which direction would the oxygen move?

• Out of the blood
• Into the blood

Where is there a low concentration of dye?

• at the bottom of cup

• in the color

• at the top of cup

• no concenteraion gradient

The picture below is an example of _________________.

• osmosis

• isotonic

• diffusion

• active transport

What is diffusion?

• when molecules move 
• when molecules move from a high concentration to a low concentration.
• no movement 
• molecules move everywhere

Diffusion occurs only in solids

• True

• False

How long does diffusion last?

• Until the concentration of particles in the system is equal

• Until a region in the system has a smaller concentration of particles than the other

• Until a region in the system has a greater concentration of particles than the other

• Until the particles disappear from the system