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- 1. Multiple Choice
Diffusion occurs only in solids
True
False
- 2. Multiple Choice
What is a solute?
A substance dissolved in another substance
the substance doing the dissolving
- 3. Multiple Choice
What is a solvent
The one doing the dissolving
The substance dissoved in another substance
- 4. Multiple Choice
How do the particles move in diffusion?
From a region of low concentration to a region of high concentration
From a region of high concentration to a region of low concentration
From a region of low concentration to a region of low concentration
From a region of high concentration to a region of high concentration
- 5. Multiple Choice
How long does diffusion last?
Until the concentration of particles in the system is equal
(Select this answer and I swear i'll make it harder for you in the assessment task)
Until a region in the system has a greater concentration of particles than the other
Until the particles disappear from the system
- 6. Multiple Choice
What happens to the coffee particles when coffee is added to hot water?
They sink to the bottom of the cup
They spread out
They clump together
- 7. Multiple Choice
Select the 4 correct answers. A particle _____.
can be a solid.
can be a liquid.
can be a gas.
has random motion.
remains stationary.
- 8. Multiple Choice
Which diagram best shows the end result of diffusion?FGHJ - 9. Multiple Choice
Diffusion is the movement of molecules from an area of _____ concentration to an ______ concentration
High, low
Low, high
Low, low
High, high
- 10. Multiple Choice
Where is there a low concentration of dye?
at the bottom of cup
in the color
at the top of cup
no concenteraion gradient
- 11. Multiple ChoiceWhat is diffusion?when molecules movewhen molecules move from a high concentration to a low concentration.no movementmolecules move everywhere
- 12. Multiple ChoiceObjects gain heat and _________.expandcontract
- 13. Multiple ChoiceWhat happens to particles when they are heated?They speed up and spread outThey slow down and compressThey stop movingThey move closer together and speed up
- 14. Multiple Choice
From fastest to slowest rate of diffusion, which of the following is in the correct sequence?
Solids, liquids, gases
Liquids, gases, solids
Gases, liquids, solids
Gases, solids, liquids
- 15. Multiple Choice
Which of the following will diffuse the fastest?
A tablespoon of sugar in a glass of water
Heat through a solid piece of steel
A pinch of salt in a glass of water
The smell of bacon cooking throughout a room
- 16. Multiple Choice
What does a 'region with high concentration' mean?
An area with a SMALL number of particles
An area with a LARGE number of particles
An area with an UNEVEN number of particles
An area with no particles
- 17. Multiple Choice
An increase in temperature does what to diffusion?
Speeds it up
Slows it down
Nothing
Stops it all together
- Answer choicesTagsAnswer choicesTags