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- 1. 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.
- 2. Multiple Choice
Which diagram best shows the end result of diffusion?FGHJ - 3. Multiple ChoiceA 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?respirationfermentationosmosisdiffusion
- 4. Multiple Choice
Diffusion is the movement of molecules from an area of _____ concentration to an ______ concentration
High, low
Low, high
Low, low
High, high
- 5. Multiple ChoiceIf there is more oxygen in the blood than in an organ, which direction would the oxygen move?Out of the bloodInto the blood
- 6. 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
- 7. Multiple Choice
The picture below is an example of _________________.
osmosis
isotonic
diffusion
active transport
- 8. Multiple ChoiceWhat is diffusion?when molecules movewhen molecules move from a high concentration to a low concentration.no movementmolecules move everywhere
- 9. Multiple Choice
Diffusion occurs only in solids
True
False
- 10. Multiple Choice
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
- 11. Multiple Choice
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
- 12. Multiple Choice
What is thermal expansion?
The transfer of thermal energy between materials by the collisions of particles
Is a decrease in a material's size when temperature decreases
An increase in a material's size when temperature increases
diffusion of air freshener
- 13. Multiple Choice
Suppose that a container of liquid is heated so that thermal expansion occurs. Why might the liquid overflow after heating?
the volume of liquid contracts
the volume of liquid expands
the liquid remains the same volume
- 14. Multiple ChoiceObjects gain heat and _________.expandcontract
- 15. Multiple ChoiceThe liquid in the thermometer rises when it is placed in the hot water because ___________.it gains heat from the hot water and expands.loses heat from the hot water and contracts.the surrounding air is too warm.the liquid is boiling.
- 16. Multiple Choice
How does an increase in temperature affect diffusion?
Diffusion speeds it up
Diffusion slows it down
Diffusion has no effect
- 17. Multiple ChoiceThe faster an object moves, the ________ kinetic energy it has.morelessnone of the aboveall of the above
- 18. Multiple ChoiceAll matter is made of _____ that are constanly moving.insulatorsparticlesconvectionpieces of plastic
- 19. Multiple ChoiceAs the kinetic energy of the molecules in a substance increases, the temperature of the substance __________.increasesdecreases
- 20. 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
- Answer choicesTagsAnswer choicesTags