LBC Chapter 12 vocab working
Presentation
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
Jess Racine
FREE Resource
8 Slides • 2 Questions
1
number density
The number of gas
particles per unit volume;
used because the mass
of a gas doesn’t affect its
density
The blue gas has a higher number density
than the red gas, even though the red gas
has a higher mass
10 particles of He
gas, mass = 20 g
4 particles of C
gas, mass = 24 g
2
mole
A counting unit for molecules, ions
or particles
1 mole = 6.02 x 1023 objects, does
NOT depend on mass or volume
1 mole of various substances is
pictured to the left
3
Avogadro’s number
the
number of
particles
in a mole
4
standard temperature
and pressure (STP)
273 K
(0 oC)
1 atm
5
Dropdown
6
Avogadro’s law
The volume of a gas is
directly proportional to
the number of moles
under temperature and
pressure are constant.
7
ideal gas law
8
universal gas constant, R
9
Multiple Choice
The gas law that states that the volume of a gas is directly proportional to the number of moles under temperature and pressure are constant.
combined gas law
Avogadro's law
ideal gas law
law of conservation of mass
10
relative humidity
The amount of water
vapor in the air
compared to the
maximum amount of
water vapor possible for
a specific temperature,
expressed as a
percentage.
number density
The number of gas
particles per unit volume;
used because the mass
of a gas doesn’t affect its
density
The blue gas has a higher number density
than the red gas, even though the red gas
has a higher mass
10 particles of He
gas, mass = 20 g
4 particles of C
gas, mass = 24 g
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