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Diffusion

Total questions: 12

Worksheet time: 6mins

Name
Class
Date
1.

Diffusion occurs only in solids

a)

True

b)

False

2.

How do the particles move in diffusion?

a)

From a region of low concentration to a region of high concentration

b)

From a region of high concentration to a region of low concentration

c)

From a region of low concentration to a region of low concentration

d)

From a region of high concentration to a region of high concentration

3.

How long does diffusion last?

a)

Until the concentration of particles in the system is equal

b)

(Select this answer and I swear i'll make it harder for you in the assessment task)

c)

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

d)

Until the particles disappear from the system

4.

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

a)

Structured

b)

In a straight line

c)

Random

d)

In curved, way motions

5.

What does a 'region with high concentration' mean?

a)

An area with a SMALL number of particles

b)

An area with a LARGE number of particles

c)

An area with an UNEVEN number of particles

d)

An area with no particles

6.

When do molecules stop moving or vibrating?

a)

When equilibrium is reached

b)

Never

c)

When the temperature is below 0 degrees Celsius

d)

When the substance they are part of becomes a solid

7.

From fastest to slowest rate of diffusion, which of the following is in the correct sequence?

a)

Solids, liquids, gases

b)

Liquids, gases, solids

c)

Gases, liquids, solids

d)

Gases, solids, liquids

8.

What does “area of high concentration” mean?

a)

Spread out

b)

Tightly packed together

c)

Uncrowded

d)

Spacious

9.

An increase in temperature does what to diffusion?

a)

Speeds it up

b)

Slows it down

c)

Nothing

d)

Stops it all together

10.
What happens to particles when they are heated?
a)
They speed up and spread out
b)
They slow down and compress
c)
They stop moving
d)
They move closer together and speed up
11.
Objects gain heat and _________. 
a)
expand
b)
contract
12.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
all of the above