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Chapter 8 KMT and Gas Laws Flashcards | StudBud
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Chapter 8 KMT and Gas Laws
Chapter 8 KMT and Gas Laws
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1
What is 22.4 Liters called?
particles numbers at STP
Molar volume of gas at STP
Molar mass of gas at STP
Avagadro's number
2
A real gas behaves
most like
an ideal gas under conditions of
low temp and high pressure
High temp and low pressure
low temp and low pressure
High temp and high Pressure
3
Which of the following describes collisions between particles in the KMT theory?
Particles bounce off each other and do not transfer energy
Particles stick together
Particles sometimes bounce off and sometimes stick together
Particles are destroyed
4
The Kinetic Molecular Theory states:
Matter is made of atoms & molecules which are always in motion
All atoms are made up of neutrons which are always moving
Atoms are made of immobile particles
Atoms (made up of multiple elements) are never in motion
5
Avogadros number is the...
number of particles in one mole of a substance
number of grams per mole
number of protons in one nucleus of a substance
number of units in one molecule
6
When does a real gas behave
least like
an ideal gas?
Low pressure, low temperature
High pressure, low temperature
High temperature, low pressure
High pressure, high temperature
7
Standard Temperature and Pressure
325k & 1 atm
10k & 1 atm
273k & 1 atm
125k & 1 atm
8
Which are STP conditions ?
0oC, 1 torr
0oC, 1 atm
273 K, 1 torr
100oC, 1atm
9
The kinetic theory of gases provide a model for behavior of ...
ideal gas
helium
magnets
ideal liquids
10
When temp is constant and
pressure is increased
then ...
volume decreases
volume increases
mass increases
particles move more slowly
11
Combined Gas Law
PV = nRT
P1V1 = P2V2
(P1V2 ) / T1 = (P2V2 ) / T2
V1 / T1 = T2 / V2
12
An ideal gas is...
real
green
heavy
hypothetical
13
According to the Kintetic-Molecular Theory, gas particles
are in constant motion
have different colors
have different shapes
are attracted to each other
14
Only _____ have perfectly elastic collisions.
hockey pucks
Play-Doh balls
billiard balls
gas molecules
15
When the
temperature of a gas increases
at constant pressure then...
its particles move slower
its volume decreases
its mass increases
its volume increases
16
Kinetic molecular theory describes the behavior of matter in terms of...
stored atoms
motion of the particles
absolute zero
solids, liquids, and gases
17
Are gases more reactive than liquids?
No, unless it is a noble gas
Yes, unless it is a noble gas
No, never
Yes, always
18
During diffusion, gases will...
mostly stay where they are, but some will move
all molecules will move into the opposite container
spread evenly in the containers
stay where they are
19
Diffusion is the movement of particles ...
into the gas phase
from low to high concentration
into the liquid phase
from high to low concentration
20
What is the
volume of any gas at STP?
24.2 Liters
150 Gallons
1 1/2 Cups
22.4 Liters
21
Which of the following factors affect the pressure of a gas?
volume
all of the above
number of particles
temperature
22
Diffusion: compare He to H
2
rates
He moves faster than H2 because it is lighter
H2 moves faster than He because it is lighter
He moves faster than H2 because it is heavier
Diffusion rates are equal
23
What is the correct units to use for Temperature when doing gas law problems?
degrees Fahrenheit
degrees Celsius
degrees Raskind
Kelvins
24
What is the value of Avogadro's number?
867-5309
6.02 x 1023
6.20 x 103
6.00 x 1032
25
What is NOT part of the kinetic molecular theory?
When the temperature decreases, the molecules slow down.
Gas particles are very far apart from each other.
Gas particles always have inelastic collisions.
Pressure is caused by the collisions of gas molecules.
