PROPERTYSOLIDSLIQUIDSGASES VOLUME SHAPE
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Transcript of PROPERTYSOLIDSLIQUIDSGASES VOLUME SHAPE
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PROPERTY SOLIDS LIQUIDS GASES
VOLUME
SHAPE
Fill in the table above with definite or not definite
olive oil molasses lotion rubbing alcohol
Which liquid has the highest viscosity?
Which liquid has the lowest viscosity?
Warm-up
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Section 15-2:Behavior of Gases
Boyle’s, Charles’s and the 3rd Law
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How full do you inflate a balloon for the Macy’s
Thanksgiving Day Parade?
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The physical behavior of gascan be described by
pressure (P), volume (V), and temperature (T)
P, V, & T are interdependent(changing one, affects the others)
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•VOLUME *amount of space matter
fills*measured in cm3, mL, L*volume of a gas, is the volume of its container
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•TEMPERATURE
*measure of the average motion of the particles of a substance (remember - all particles move)
*speedometer for particles*example: 20°C (room temp) is about 500 m/sec
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•TEMPERATURE
*measured in Celsius, Kelvin, or Farenheit
Low temperature: Cold particles, low energy, huddle to stay warm
High Temperature: Hot particles, high energy, spread out
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•PRESSURE = FORCE AREA
( in units of kPa)
*force of the outward push of the particles on their
container
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Questions: Why does an inflated ball leak when punctured?Why is a deflated balloon never completely flat?
Gas flows from areas of:
High Low Pressure Pressure
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Robert Boyle (1627-1691) British scientist
BOYLE’S LAW
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Boyle’s Law(squeeze a zit)
At a constant temperature, as the pressure increases the volume
decreases, as the pressure decreases the volume increases
T as P Vor
T as P V
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Boyle’s Law: Varies Inversely
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Boyle’s Law
What happens to helium balloons that are released and float to the heavens?
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Jacques Alexandre César Charles (1746–1823), French scientist
Charles’s Law
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Charles’s Law(Charlie leaves his flexible, basketball outside)
At a constant pressure, as the temperature increases (particles move faster, collide more) the volume increases, as the temperature decreases
the volume decreases
P as T Vor
P as T V
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Charles’s Law: Directly Proportional
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Charles’s Law
If Charlie leaves his basketball outside,
why is it deflated in the morning and fine by
noon?
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3rd LAWRigid propane tank outside
V as T Por
V as T P
At a constant volume, as the temperature increases (particles move
faster, collide more) the pressure increases, as the temperature
decreases the pressure decreases
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3rd Law18-wheeler truck with rigid tires
How full should a truck driver fill his
tires in the morning, if he will be driving
to Las Vegas, across the desert?
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• T P VBoyles Law (inverse)
• P T VCharles’s Law (direct)
• V T P3rd Law (direct)
Zit
Flexible Basketball
Rigid Propane
Summary of Gas Laws