review: gases packet
DESCRIPTION
Review: Gases Packet. Describe particle motion of a gas. Motion – continuous, random motion. Who’s Law states: P 1 V 1 = P 2 V 2. Boyle’s. What happens at absolute zero?. All molecular motion stops. describe the volume of gases. Volume – NOT definite. - PowerPoint PPT PresentationTRANSCRIPT
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Review:
Gases Packet
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WHICH LAW STATES: PV = NRT?
Ideal
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WHAT VARIABLE IS HELD CONSTANT FOR CHARLES’
LAW?Pressure (& # of particles)
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WHAT DOES THE ”N” REPRESENT IN THE
FOLLOWING LAW: PV = NRT?
# of moles
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DESCRIBE PARTICLE MOTION OF A GAS.
Motion – continuous, random motion
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WHO’S LAW STATES: P1V1 = P2V2?
Boyle’s
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WHAT HAPPENS AT ABSOLUTE ZERO?
All molecular motion stops
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DESCRIBE THE VOLUME OF GASES.
Volume – NOT definite
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WHO’S LAW CAN BE USED TO EXTRAPOLATE ABSOLUTE
ZERO?Charles’ law
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USING THE KMT, EXPLAIN WHAT HAPPENS TO THE PRESSURE OF
A GAS WHEN THE VOLUME DECREASES?
As volume decreases, gas particles have more collision w/ container walls, therefore causing a HIGHER pressure
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WHY CAN GASES BE COMPRESSED WHILE SOLIDS
CANNOT?B/c gases have A LOT of space between particles to be pushed together while solids DO NOT have a lot of space between particles
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_______ IS WHERE GAS PARTICLES CAN PASS THROUGH TINY
OPENINGS
Effusion
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AT WHAT TEMPERATURE DOES ABSOLUTE ZERO
OCCUR?0 K or -273C
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EXPLAIN WHAT HAPPENS TO THE VOLUME OF A GAS WHEN THE TEMPERATURE INCREASES AND PRESSURE IS CONSTANT? As temp. increases, volume increases!
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WHO’S LAW STATES: V1_ = V2__ ? T1 T2
Charles’ Law
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WHO’S LAW WOULD YOU USE IF A GAS WAS COLLECTED
OVER WATER?Dalton’s Law
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WHICH LETTER REPRESENTS WHERE THE VACUUM IS?
B B
A
C
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______ IS A GAS THAT DOES NOT BEHAVE ACCORDING TO KMT
Real Gas
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WHO’S LAW STATES:
PDRY GAS = PTOTAL PWATER VAPOR ?Dalton’s Law of Partial Pressures
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DEFINE BOYLE’S LAW.
Boyle’s = volume & pressure are INVERSELY proportional @ constant temp.
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WHAT DOES A BAROMETER MEASURE?
Atmospheric pressure
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WHAT CAUSES A GAS TO EXERT PRESSURE?
Collisions with any surface (more collisions = more pressure)
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LIST 2 WAYS ATMOSPHERIC PRESSURE CAN BE
AFFECTED?
WeatherElevation
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WHAT GAS LAW IS REPRESENTED BY THE FOLLOWING GRAPH?
Charles’ Law
Graph A
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HOW CAN THE HEIGHT OF THE HG BE USED TO MEASURE
ATMOSPHERIC PRESSURE IN A HG BAROMETER?
The pressure of the atmosphere is directly proportional to the height of Hg in the column
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WHAT VARIABLE IS HELD CONSTANT FOR BOYLE’S
LAW?Temperature (& # of particles)
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WHAT LAW STATES: _P1V1 = _P2V2 ? T1 T2
Combined Gas Law
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WHAT ARE 2 CAUSES OF NON-IDEAL BEHAVIOR OF
GASES?
HIGH pressuresLOW temperatures
Both force gas particles to have a lot of IM forces
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WHAT FORCE IS PULLING DOWN ON THE COLUMN OF
MERCURY IN A BAROMETER? Gravity
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_______ IS AN IMAGINARY GAS THAT CONFORMS TO KMT
Ideal Gas
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IF THE VOLUME OF A GAS IS DOUBLED, WHAT HAPPENS TO THE
PRESSURE AT A CONSTANT TEMPERATURE?
Pressure is HALVED!
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DESCRIBE PARTICLE SPACING OF A GAS.
Spacing – very far apart
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WHAT WILL HAPPEN TO THE COLUMN OF MERCURY, IF ATMOSPHERIC PRESSURE
DECREASES? DECREASES!!
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WHAT GAS LAW IS REPRESENTED BY THE FOLLOWING GRAPH?
Boyle’s LawGraph B
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DESCRIBE THE SHAPE OF GASES.
Shape – NOT definite
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_______ IS THE SPONTANEOUS MIXING OF PARTICLES
Diffusion
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IF THE TEMPERATURE OF A GAS IS TRIPLED, WHAT HAPPENS TO THE
VOLUME AT A CONSTANT PRESSURE?
Volume is tripled
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WHICH GAS (IDEAL OR REAL) IS USED IN THE STUDY OF
THE DIFFERENT GAS LAWS? IDEAL!
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DEFINE CHARLES’ LAW.
Charles’ = volume & temp. are DIRECTLY PROPORTIONAL @ constant pressure
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AT A CONSTANT TEMPERATURE, IF VOLUME IS HALVED, WHAT HAPPENS TO
PRESSURE?Pressure doubles