NEW
Font size
S
M
L
XL
WorksheetsGases - Topic 7
Total questions: 25
Worksheet time: 29mins
Name
Class
Date
1.
When the atmospheric pressure equals the equilibrium vapor pressure ___ occurs.
a)
freezing
b)
melting
c)
boiling
d)
sublimation
2.
water have a low vapor pressure because
a)
it has strong london dispersion forces acting between its molecules
b)
it has strong hydrogen bonds acting between its molecules
c)
it has a weaker force of attraction between its molecules
d)
it is very volatile
3.
The lower the boiling point, the ___ the intermolecular forces.
a)
stronger
b)
weaker
4.
Liquids with weak intermolecular forces
a)
contain a lot of kinetic energy
b)
easily evaporate
c)
cannot diffuse
d)
freeze easily
5.
What is the boiling point of water
a)
0 C
b)
100 F
c)
50 C
d)
100 C
6.
What is water's melting point?
a)
32 C
b)
0 C
c)
32 F
d)
0 F
7.
Lowest possible temperature, all motion of particles stops
a)
absolute Kelvin
b)
absolute zero
c)
ideal temperature
d)
Avogadro's Law
8.
A container holds three gases: oxygen, carbon dioxide, and helium. The partial pressures of the three gases are 2.00 atm, 3.00 atm, and 4.00 atm, respectively. What is the total pressure inside the container?
a)
2 atm
b)
4 atm
c)
3 atm
d)
9 atm
9.
The partial pressure of gas X is 340 torr. The partial pressure of gas Y is 264 torr. The partial pressure of gas Z is 100 torr. What is the total pressure exerted by the gases in this system?
a)
76 torr
b)
440 torr
c)
604 torr
d)
704 torr
10.
Which of the following gases will effuse most slowly under the same physical conditions?
Don't forget to check for diatomics!
Don't forget to check for diatomics!
a)
Hydrogen
b)
Chlorine
c)
Ammonia (NH3)
d)
Bromine
11.
Which gas would move most slowly?
a)
He
b)
Ne
c)
Xe
d)
I2
12.
Lighter gases have a ________________ rate of effusion.
a)
faster
b)
slower
c)
rate of effusion does not depend on mass.
13.
Heavier gases have a __________________ rate of effusion.
a)
Faster
b)
Slower
c)
Rate of effusion does not depend on mass.
14.
At a constant pressure, the volume decreases. What happens to the temperature?
a)
increases
b)
decreases
c)
stays the same
15.
At a constant volume, the pressure increases. What happens to the temperature?
a)
increases
b)
decreases
c)
stays the same
16.
At a constant temperature, the volume decreases. What happens to the pressure?
a)
increases
b)
decreases
c)
stays the same
17.
A mole of a substance is equal to how many particles?
a)
6.02 x 10^23
b)
22.4 liters of gas
c)
equal to a dozen
d)
6 Kelvins
18.
What is the value of STP?
a)
0 K and 1 atmosphere
b)
0 C and 1 atmosphere
c)
32 F and 1 atmosphere
d)
100 C and 1 atmosphere
19.
What is zero degrees Celsius converted to Kelvin?
a)
100
b)
273
c)
373
d)
212
20.
When a cold tire is inflated to a certain pressure and then is warmed up due to friction with the road, the pressure increases. This happens because the
a)
air molecules hit the walls of the tire less frequently
b)
rubber in the tires reacts with oxygen in the atmosphere
c)
air molecules speed up and collide with the tire walls more often
d)
air molecules diffuse rapidly through the walls of the tire.
21.
Gases have...
a)
A definite shape and volume
b)
A definite shape but no definite volume
c)
No definite shape but a definite volume
d)
No definite shape or volume
22.
As number of moles goes up, volume
a)
goes down.
b)
goes up.
c)
stays the same
23.
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
24.
Gas A is at 200K and gas B is at 100K. Which of the following statements is true.
a)
Gas A has half the average kinetic energy of gas B.
b)
Gas A has the same average kinetic energy of gas B.
c)
Gas A has twice the average kinetic energy of gas B.
d)
Gas A has 20x the average kinetic energy of gas B.
25.
What happens to the temperature of a gas when the volume increases?
a)
it increases
b)
it decreases
c)
it stays the same
Reset
