Gases Chemistry Worksheet - Chapter 13, An Introduction To Chemistry Page 36
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Chapter 13
Gases
Key Ideas
Complete the following statements by writing one of these words or phrases in each
blank.
0 °C
increases
-7
10
m
Kelvin
0.1%
Kelvin temperature
70%
liters, L
99.9%
molar mass
1 atm
molarity
101.325 kPa
moles, mol
273.15 K
moles of gas
760 mmHg
necessary unit conversions
algebra
number of collisions
alone
number of particles
attractions
pascal, Pa
attractive or repulsive
point-masses
Avogadro’s Law
portion
collide
pressure
continuous
rapid
correct equation
real
degrees Celsius, °C
repulsions
direction of motion
sum
directly
temperature
empty space
temperature and volume
force
ten
force per unit area
velocity
greater force
volume
4.
Under typical conditions, the average distance between gas particles is about
_____________ times their diameter.
5. Because of the large distances between gas particles, the volume occupied by the
particles themselves is very small compared to the volume of the _____________
around them.
6.
For a gas at room temperature and pressure, the gas particles themselves occupy
about _____________ of the total volume. The other _____________ of the
total volume is empty space (whereas in liquids, about _____________ of the
volume is occupied by particles).
7. Because of the large distances between gas particles, there are very few
_____________ or _____________ between them.
8.
The particles in a gas are in _____________ and _____________ motion.
9. As the temperature of a gas increases, the particles’ velocity _____________.
10.
The particles in a gas are constantly colliding with the walls of the container
and with each other. Because of these collisions, the gas particles are constantly
changing their _____________ and their _____________.
11. Oxygen, O
, molecules at normal temperatures and pressures move an average of
2
_____________ between collisions.
12.
The particles of an ideal gas are assumed to be _____________, that is, particles
that have a mass but occupy no volume.
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