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Gases around Us

Total questions: 35

Worksheet time: 12mins

Name
Class
Date
1.

How are the particles in a gas arranged?

a)

further apart

b)

tightly packed

c)

quite closely packed

d)

there are no particles in a gas

2.
Earth is surrounded by an envelope of gases called the _____________.
a)
hydrosphere
b)
solar system
c)
atmosphere
d)
cloud bubble
3.
Which of these does a fire need to burn?
a)
argon
b)
carbon dioxide
c)
nitrogen
d)
oxygen
4.
Which of these do plants need in order to make food?
a)
argon
b)
carbon dioxide
c)
nitrogen
d)
oxygen
5.
Which of these makes up about 21 percent of the atmosphere?
a)
argon
b)
carbon dioxide
c)
nitrogen
d)
oxygen
6.
_________________ is the most abundant gas in our atmosphere.
a)
Argon
b)
Oxygen
c)
Carbon Dioxide
d)
Nitrogen
7.
How does the atmosphere protect life on Earth?
a)
It blocks harmful rays from the sun
b)
It keeps our planet the right temperature
c)
It provides oxygen to breathe
d)
All of these protect life on Earth
8.
What does ozone in the atmosphere do?
a)
it absorbs and traps heat energy
b)
it provides a place for water vapor to condense
c)
it protects against harmful uv radiation
d)
it helps plants grow
9.

What gas in the air is causing global warming?

a)

carbon dioxide

b)

oxygen

c)

helium

10.
Which is a quality that only gasses display
a)
Spread out to fill all available space
b)
Take the shape of their container
c)
Can't be compressed
d)
All of these
11.
If a balloon is cooled what will happen to the volume?
a)
Volume will increase
b)
Volume will decrease
c)
Volume will not change
12.
Gas molecules can easily be compressed  because ___________. 
a)
gas molecules are soft
b)
gas molecules are far apart
c)
gas molecules follow the shape of the container
13.
You go camping and roast marshmallows over a campfire. What happens to the volume of the air bubbles inside the marshmallows? 
a)
It increased
b)
It decreased
c)
It stayed the same
14.
Pick the best answer to explain all properties of gases....
a)
They're fluids 
Can be compressed
Little space between particles 
b)
They're solids 
Can be compressed
Lots of space between particles 
c)
They're fluids 
Cannot be compressed
Lots of space between particles 
d)
They're fluids 
Can be compressed
Lots of space between particles 
15.
Matter is anything that has _________ and _________.
a)
length and width
b)
mass and volume
c)
a boiling point and a freezing point
d)
size and shape
16.
What are three common phases of matter?
a)
solid, liquid and gas
b)
atom, element and molecule
c)
mixture, solution and compound
d)
mass, volume and temperature
17.
The smallest particles of matter are __________.
a)
elements
b)
compounds
c)
atoms
d)
molecules
18.
The amount of matter in a substance, or object, is its __________.
a)
volume
b)
length
c)
temperature
d)
mass
19.
A __________ is used to measure mass.
a)
balance
b)
thermometer
c)
beaker
d)
meter stick
20.
__________ is the amount of space matter takes up.
a)
Mass
b)
Liquid
c)
Volume
d)
Gas
21.
Scientists most often measure the volume of a fluid in __________.
a)
milliliters and liters
b)
degrees Celsius
c)
millimeters, centimeters, meters and kilometers
d)
grams and kilograms
22.
Particles in a __________ have very little movement and the object keeps its shape and volume.
a)
solid
b)
liquid
c)
gas
23.
__________ have a definite volume and tend to take the shape of their container. 
a)
solids
b)
liquids
c)
gases
24.
Water vapor is a __________.
a)
solid 
b)
liquid
c)
gas
25.
Water becomes a solid when __________.
a)
temperature is increased
b)
temperature is decreased
26.
Compress means to __________.
a)
flatten by pressure
b)
increase temperature
c)
melt
d)
decrease mass
27.
Solids __________.
a)
take the shape of their container
b)
have a fixed shape
c)
are compressible
d)
have particles that flow easily
28.
Gases __________.
a)
have a fixed shape
b)
are easily compressed
c)
have particles that do not flow easily
d)
have a definite volume
29.

The attraction between particles gives solids a definite

a)

shape and volume

b)

shape and color

c)

shape and position

d)

flow and radius

30.

The temperature at which a solid begins to liquefy is its ______ point.

a)

freezing

b)

boiling

c)

melting

d)

mass

31.

_______________ is an increase in the size of a substance when the temperature is increased.

a)

kinetic energy

b)

potential energy

c)

thermal point

d)

thermal expansion

32.

Why can people on one side of a room smell the scent of an air freshener sprayed on the opposite side of the room?

a)

The molecules of air freshener have thermally expanded

b)

The air pressure where the freshener was sprayed is greater than in the rest of the room

c)

The molecules of air freshener spread out until they are evenly distributed throughout the room

d)

The molecules of air freshener are amorphous

33.

When a gas becomes a liquid it is called

a)

condensation

b)

evaporation

c)

sublimation

d)

freezing

34.
The glass in the first picture had the temperature shown.  About fifteen minutes later, it had the new temperature as shown in the second picture.  What happened to the glass during that fifteen minutes?
a)
Someone put the glass outside on a warm day.
b)
Someone put the glass next to a hot stovetop.
c)
Someone put the class in the freezer.
d)
Nothing happened to the glass
35.
A liquid changes to a gas during _________.
a)
Condensation
b)
Evaporation
c)
Precipitation
d)
Sublimation

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