States of matter
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States of matter. 3. Solid. Def. shape & volume Packed tightly Vibrations Crystals – pattern Amorphous – easily move. Liquid. Def. volume, not shape Further apart, movement! Fluid – substance that flows Surface tension – skin – pull toward Viscosity – resistance of a liquid to flow.

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Solid
Solid

  • Def. shape & volume

  • Packed tightly

  • Vibrations

  • Crystals – pattern

  • Amorphous – easily move


Liquid
Liquid

  • Def. volume, not shape

  • Further apart, movement!

  • Fluid – substance that flows

  • Surface tension – skin – pull toward

  • Viscosity – resistance of a liquid to flow


gas

  • No def. shape/volume

  • Far apart, most movement


Changes in state
Changes in state

Solid - liquid

Liquid - solid

  • Melting – break free

  • 0 C

  • Freezing – begin forming patterns


Phase changes
Phase changes

Liquid - gas

Gas - liquid

  • Gains energy

  • Vaporization – def.

  • Boiling – within liq.

  • Evap – surface

  • Air pressure affects

  • 95 degrees C for Denver

  • Condensation

  • Loses thermal energy


Solid gas
Solid - gas

  • Sublimation – gains energy


Iii measuring gases
III measuring gases

  • Volume – cm3

  • Temp increase, increase motion of gas

  • 500 meters/sec. 2x that of a jet

  • Pressure – force on walls of container. Pascals


Pressure and volume
Pressure and volume

  • Boyles Law . Increase vol. decrease pressure

  • Helium balloon decrease air press, increase vol of balloon


Pressure and temp
Pressure and temp

  • Increase temp, increase pressure in constant volume (container that’s rigid)

  • Hot tires . . Expand.


Volume and temp charles law
Volume and temp – Charles’ Law

  • Charles Law – increase temp, increase vol.

    Decrease temp, decrease the volume of the gas. The molecules move closer together and take up less space.


Boyle s law
Boyle’s Law

  • It’s backwards!!! Meaning if you increase the volume, you decrease the pressure!!! Or, if you decrease the volume, you increase the pressure.


Graphing gas behavior
Graphing Gas Behavior

Temp (degrees C) Volume (mL)

0 50

10 52

20 54

30 56

40 58

50 60

60 62

70 63

80 66

90 67

100 69


Pressure and volume1
Pressure and Volume

  • Volume (mL) Pressure (kPa)

  • 300 20

  • 250 24

  • 200 30

  • 150 42

  • 100 58

  • 50 120


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