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Unit 3 SOM & Gas Laws Review

Total questions: 50

Worksheet time: 40mins

Name
Class
Date
1.

A vacuum cleaner works by creating a space of _______ within the canister.

a)

low pressure

b)

high pressure

c)

low temperature

d)

high temperature

2.

There are fewer molecules as you climb a mountain.

a)

The pressure should increase as you go up

b)

The pressure should decrease as you go up.

c)

The temperature should increase as you go up.

d)

Nothing changes as you climb the mountain.

3.

Air pressure occurs ______.

a)

mainly down

b)

mainly up

c)

mainly to the side

d)

in all directions

4.

Air can cause objects to move from _____ to _____ .

a)

high to low pressure

b)

high to low temperature

c)

low to high pressure

d)

low to high temperature

5.

Which particles are easiest to press together (compress)?

a)

Gases

b)

Liquids

c)

Solids

d)

All are equally the same.

6.

Pressure in a container _______ if the number of collisions ________.

a)

increases; increases

b)

decreases; increases

c)

increases; remains the same

d)

remains the same; decreases

7.

What best describes why the two cans rolled towards each other? Blowing between them _____.

a)

increased pressure between them.

b)

decreased pressure between them

c)

increased pressure outside of them

d)

decreased pressure outside of them

8.

What kept the water from falling out of the inverted cup?

a)

Magic

b)

Gravity pulls it up

c)

Air applied a force upward

d)

Water is sticky

9.

If water did not shoot out of the hole of the bottle then air pressure _____

a)

was greater than water.

b)

was less than water.

c)

was equal to water.

d)

is weak

10.

What best explains why the tissue in the beaker does not get wet even though the beaker goes underwater?

a)

The beaker was empty space.

b)

The tissue was small.

c)

Water was pulled down by gravity

d)

Air pushed the water particles away from the tissue.

11.

Temperature best describes ________.

a)

the space an object occupies

b)

the average energy of the particles' motion

c)

the force of the particles

d)

the number of particles

12.

If a student wants to draw higher pressure then they should draw _____

a)

more particle dots

b)

longer particle arrows

c)

more arrows striking the surface

d)

All of the above

13.

The lowest temperature for the _________ scale is zero.

a)

Kelvin

b)

Celsius

c)

Fahrenheit

d)

All of them

14.

What is the relationship between pressure and temperature?

a)

Positive; both increase together

b)

Negative; as Temp increases pressure decreases

c)

Positive; as Temp increases pressure decreases

d)

Negative; both increase together

15.

As a substance becomes warmer, the density tends to ______.

a)

remain the same

b)

decrease

c)

increase

16.

How is water's behavior different than the other substances in the SIM lab (Oxygen, Neon, Argon)?

a)

The density of the liquid is less than the solid.

b)

The density of the solid is less than the liquid.

c)

The density of the liquid is greater than a gas.

d)

The density of the liquid is less than a gas.

17.

Why does a hot air balloon rise?

a)

Hot air spreads out more and is denser than cold air.

b)

Hot air spreads out more and is less dense than cold air

c)

Hot air has less particles and is less dense.

d)

Hot air has less particles and is denser.

18.

If you remove air particles from inside the balloon then it will _______.

a)

Shrivel up; less particles = less pressure

b)

Pop; less particles = less pressure

c)

Shrivel up; less particles = more pressure

d)

Pop; less particles = more pressure

19.

A vacuum is _______.

a)

something that cleans your house

b)

a space containing little to no particles

c)

a space of very high pressure

d)

a space of very high temperature

20.

Pressure is

a)

defined as the mass that an object exerts when at rest.

b)

not a measurable in gases.

c)

defined as the number of moles of substance divided by the mass of the substance.

d)

created by the force of the gas particles impacting the walls of the container.

21.

The data table below shows that as the pressure of a gas sample was changed, the volume of the gas changed. The pressure was measured in atmospheres (atm) and the volume was measured in milliliters (mL).


According to the data table, as the pressure of the gas increases, the volume of the gas:

a)

decreases

b)

increases

c)

remains the same

22.
A balloon will pop in the atmosphere because..
a)
Pressure goes down volume goes up
b)
Pressure goes up volume goes down
c)
temperature goes down volume goes up
d)
volume goes down temperature goes down
23.
A gas
a)
has a definite shape but no definite volume
b)
has a definite volume but no definite shape
c)
has fast-moving particles
24.

Which is a quality that only gases display?

a)

Spread out to fill all available space

b)

Can be compressed

c)

Take the shape of their container

d)

All of these

25.

WHAT STATE OF MATTER IS C?

a)

SOLID

b)

LIQUID

c)

GAS

d)

SUPER FLUID

26.

WHAT STATE OF MATTER IS B?

a)

SOLID

b)

LIQUID

c)

GAS

d)

SUPER FLUID

27.

WHAT STATE OF MATTER IS A?

a)

SOLID

b)

LIQUID

c)

GAS

d)

SUPER FLUID

28.

WHAT IS THE PHASE CHANGE FROM C TO B?

a)

MELTING

b)

FREEZING

c)

VAPORIZATION

d)

CONDENSATION

29.

WHAT IS THE PHASE CHANGE FROM B TO A?

a)

MELTING

b)

FREEZING

c)

VAPORIZATION

d)

CONDENSATION

30.

WHAT IS THE PHASE CHANGE FROM C TO A?

a)

MELTING

b)

SUBLIMATION

c)

DEPOSITION

d)

CONDENSATION

31.

WHAT IS THE PHASE CHANGE FROM A TO C?

a)

MELTING

b)

SUBLIMATION

c)

DEPOSITION

d)

CONDENSATION

32.

In region A, identify the state(s) of matter

a)

gas

b)

liquid

c)

solid

33.

At what TIME does the material enter the phase change from liquid to gas

a)

~5min

b)

~15 min

c)

~25min

d)

~35min

34.

What is the boiling temperature of the material?

a)

0oC

b)

100oC

c)

-25oC

d)

225oC

35.
True or false: melting and freezing occur at the same temperature!
a)
True
b)
False
c)
I don't know
36.

What line segment represents only the solid state? (Diagram F)

a)

A-B

b)

B-C

c)

C-D

d)

D-E

37.
Water exists as a _____________ at 3 mmHg and 50 °C.
a)
solid
b)
liquid
c)
gas
d)
supercritical fluid
38.
Water exists as a _____________ at 700 mmHg and 50 °C.
a)
solid
b)
liquid
c)
gas
d)
supercritical fluid
39.
What phase change(s) may occur at pressures below 4.58 mmHg?
a)
sublimation/deposition
b)
melting/freezing
c)
all phase changes are possible at these pressures
d)
vaporization/condensation
40.
What is true regarding CO2 for temperatures above 31 °C?
a)
It can never be liquified.
b)
It decomposes.
c)
It has a high pressure.
d)
It is a plasma.
41.

According to Charles Law, the relationship between Temperature and Volume can best be described as....

a)

Inverse Relationship

b)

No Relationship

c)

Direct Relationship

42.
Charles' Law States...
a)
As Pressure goes up volume goes down
b)
As Pressure goes up temperature goes up
c)
As Volume goes up temperature goes up 
d)
As Pressure goes down volume goes down 
43.
In order to solve gas law calculations, temperature must be measured in:
a)
Fahrenheit
b)
Celsius
c)
Kelvin
d)
It doesn't matter 
44.
At STP, what is pressure in atmospheres?
a)
1 atm
b)
10 atm
c)
0 atm
d)
100 atm
45.
A gas of volume V is placed in a balloon.  Determine the new volume of the balloon if the pressure is tripled. The new volume will be ____ what it was originally.  
a)
1/3 of
b)
1/6 of
c)
1/9 of
d)
 9 times
46.
A gas of volume V is placed in a balloon. The absolute (Kelvin) temperature is tripled. The volume will be _____ what it was originally. 
a)
1/3
b)
1/6
c)
3 times
d)
6 times
47.

Which graph shows the pressure-temperature relationship expected for an ideal gas?

a)

1

b)

2

c)

3

d)

4

48.

(Charles Law) There are 65 liters of helium in a balloon at 35 K. If the temperature of the balloon is increased to 40 K, what will the new volume of the balloon be?

a)

40 L

b)

70 L

c)

74.3 L

d)

75.9 L

49.

What happened during the Can Crush station when the can was inverted into a beaker of ice water?

a)

The temperature increased, causing the inside pressure to drop, which crushed the can.

b)

The temperature decreased, causing the inside pressure to drop, which crushed the can.

c)

The temperature increased, causing the inside pressure to rise, which crushed the can.

d)

The temperature decreased, causing the inside pressure to rise, which crushed the can.

50.

During the Gas Law lab, what happened during the Cartesian Diver when you squeezed the 2 L bottle?

a)

The diver sank because the volume of air inside decreased, due to an increase in pressure.

b)

The diver sank because the temperature dropped.

c)

The diver sank because it became less dense due to a change in pressure.

d)

The diver sank because more air particles were added after squeezing the bottle.

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