Diffusion (7 Grade)

Select the 4 correct answers. A particle _____.

• can be a solid.

• can be a liquid.

• can be a gas.

• has random motion.

• remains stationary.

Which diagram best shows the end result of diffusion?

• F
• G
• H
• J

Tags

NGSS.MS-PS1-4

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

• High, low

• Low, high

• Low, low

• High, high

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

When does diffusion stop?

• After a day and a night

• When the particles are evenly spread out

• When there are no particles left

• When all the particles leave the system

How does an increase in temperature affect diffusion?

• Diffusion speeds it up

• Diffusion slows it down

• Diffusion has no effect

Tags

NGSS.MS-PS1-4

The faster an object moves, the ________ kinetic energy it has. 

• more
• less
• none of the above
• all of the above 

Tags

NGSS.MS-PS3-1