Diffusion - Assessment

1.

Multiple Choice

30 sec

1 pt

Diffusion occurs in liquids and gases

True

False

2.

Multiple Choice

45 sec

1 pt

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

3.

Multiple Choice

30 sec

1 pt

The movement of particles is __________, resulting in the particles being spread throughout the container

Structured

In a straight line

Random

In curved, way motions

4.

Multiple Choice

30 sec

1 pt

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

5.

Multiple Choice

45 sec

1 pt

The picture below is an example of _________________.

osmosis

isotonic

diffusion

active transport

6.

Multiple Choice

45 sec

1 pt

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

7.

Multiple Choice

45 sec

1 pt

How does the concentration gradient affect diffusion?

The greater the concentration difference the faster the rate

The smaller the concentration difference the faster the rate

The greater the concentration the slower the rate

8.

Multiple Choice

20 sec

1 pt

How does surface area affect the rate of diffusion?

Greater the surface area the slower the rate

Greater the surface area the faster the rate

Smaller the surface area the faster the rate

Surface area does not affect diffusion

9.

Multiple Choice

30 sec

1 pt

How does increasing temperature affect the rate of diffusion?

molecules move in orderly manner

Gives molecules more energy increasing the rate

Takes energy away from molecules slowing down the rate

collision of molecules slows down

10.

Multiple Choice

45 sec

1 pt

Why is diffusion important?

Molecules need to be moved out of cells

Cells need a constant supply of some molecules whilst getting rid of others

There is no other way of transporting things in or out of a cell

It requires energy which is always being produced and needs to be used up

11.

Multiple Choice

45 sec

1 pt

Where is there a low concentration of dye?

at the bottom of cup

in the color

at the top of cup

no concenteraion gradient

12.

Multiple Choice

45 sec

1 pt

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

more

less

none of the above

all of the above

13.

Multiple Choice

30 sec

1 pt

There are 24 molecules inside this cell. AFTER diffusion, how many molecules would be inside and how many would be outside?

There would be 12 inside and 12 outside

There would be 0 inside and 24 outside

The cell will stay the same with 24 inside

There will be 20 inside and 4 outside

14.

Multiple Choice

45 sec

1 pt

Why does the tea move out of the tea bag and into the water?

The warm water forces it out of the tea bag

There is equal concentration of water and tea

There is a higher concentration of tea in the bag and less in the water

There is a lower concentration of tea in the bag and more in the water

15.

Multiple Choice

30 sec

1 pt

_________ particle size allows for a larger surface area to be exposed for the reaction.

larger

smaller

16.

Multiple Choice

30 sec

1 pt

Diffusion can occur in solids, liquids and gaseous materials

True

False

17.

Multiple Choice

30 sec

1 pt

Which of the following factors does NOT have a direct influence on the rate of diffusion?

Surface area

Temperature

Colour

Concentration

18.

Multiple Choice

30 sec

1 pt

Which diagram best shows the end result of diffusion?

F

G

H

J

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