Behavior of Gases

• Boyle’s Law - The law that states the indirect relationship between pressure and volume
• Charles’ Law - The law that states the direct relationship between temperature and volume
• Gay Lussac’s Law - The law that states the direct relationship between pressure and temperature
• 4 Physical Quantities

  • pressure
  • volume
  • temperature
  • moles
• symbol of pressure - P
• symbol of volume - V
• symbol of temperature - T
• symbol of moles - n
• SI unit of pressure - Pascal (Pa)
• SI unit of volume - m3
• SI unit of temp - K
• SI unit of moles - mol
• K = °C + 273
• Barometer - it measures atmospheric pressure
• STP - Standard Temperature & Pressure
• Robert Boyle – “The volume of a given amount of g

  is inversely proportional to its pressure at a constant temperature.”
• Avogadro’s Principle - Equal volumes of all gases contain equal numbers of moles at constant temp & pressure.
• Ideal Gas Law - PV=nRT