Gases Chemistry Worksheet - Chapter 13, An Introduction To Chemistry Page 37
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Key Ideas
13. There are no _____________ forces at all between the particles of an ideal gas.
14.
The ideal gas model is used to predict changes in four related gas properties:
_____________, _____________, _____________, and _____________.
3
15. Volumes of gases are usually described in _____________ or cubic meters, m
,
and numbers of particles are usually described in _____________.
16.
Although gas temperatures are often measured with thermometers that report
temperatures in _____________ scientists generally use _____________
temperatures for calculations.
17. Each time a gas particle collides with and ricochets off one of the walls of its
container, it exerts a(n) _____________ against the wall. The sum of the forces
of these ongoing collisions of gas particles against all the container’s interior walls
creates a continuous pressure upon those walls.
18.
The accepted SI unit for gas pressure is the _____________.
19. _____________ gases deviate somewhat from predicted behavior of ideal gases.
20.
The observation that the pressure of an ideal gas is inversely proportional to the
volume it occupies if the _____________ and the temperature are constant is a
statement of Boyle’s Law.
21. When the volume of a chamber that contains a gas decreases but the number of
gas particles remains constant, there is an increase in the concentration (number
of gas particles per liter) of the gas. This leads to an increase in the number of
particles near any given area of the container walls at any time and to an increase
in the number of collisions against the walls per unit area in a given time. More
collisions mean an increase in the _____________, or pressure, of the gas.
22.
The pressure of an ideal gas is directly proportional to the _____________ of the
gas if the volume and the number of gas particles are constant. This relationship
is sometimes called Gay-Lussac’s Law.
23. Increased temperature means increased motion of the particles of a gas. If the
particles are moving faster in the container, they will _____________ with the
walls more often and with _____________ per collision. This leads to a greater
overall force pushing on the walls and to a greater force per unit area or pressure.
24.
For an ideal gas, volume and temperature described in kelvins are
_____________ proportional if the number of gas particles and pressure are
constant. This is a statement of Charles’ Law.
25. The increase in the number of gas particles in a constant-volume container leads
to an increase in the _____________ with the walls per unit time. This leads to
an increase in the force per unit area–that is, to an increase in gas pressure.
26.
If the _____________ of an ideal gas are held constant, the number of particles
in a container and the gas pressure are directly proportional.
27. The relationship between the number of particles of an ideal gas and volume is
summarized by _____________, which states that the volume and the number
of gas particles are directly proportional if the temperature and pressure are
constant.
28.
It is always a good idea to include the units in a solved equation as well as the
numbers. If the units cancel to yield a reasonable unit for the unknown property,
you can feel confident that you picked the _____________, that you did the
_____________ correctly to solve for your unknown, and that you have made
the _____________.
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