Boyles law

• Colorless gases


  • Oxygen
  • Nitrogen
  • Methane
• Mass


  The amount of gas or its mass or a quantity of a gas present in the container
• Volume


  The amount of space occupied by the gases
• Temperature


  The hotness or coldness of an object
• Pressure


  The average effect of the forces of the colliding molecules
• Commonly used units for volume

  • Cubic meter
  • Cubic diameter
  • Cubic centimeter
  • Liter
  • Milliliter
  • Quart
  • Gallon
• Commonly used units for pressure

  • Pascal
  • Atmosphere
  • Millimeters of mercury
  • Centimeters of mercury
  • Torr
  • Pounds per square inch
• Zero degrees Celsius is equal to 273 Kelvin
• Zero degrees Celsius is equal to 32 degrees Fahrenheit
• Gases


  • Easy to compress
  • Expand to fill their containers
  • Occupy far more space than the liquids or solids from which they form
• Gases


  • Molecules move independently from each other
  • Most are colorless
  • Particles will spread about or diffuse to fill all the space in any container
• Gases


  • Have very low density and viscosity
  • Cannot be directly seen as they are colorless
  • Can measure their density, mass, volume, temperature and pressure
• Commonly used units for volume

  • Cubic meter
  • Cubic decimeter
  • Cubic centimeter
  • Liter
  • Milliliter
  • Quart
  • Gallon
• • 1 milliliter is equal to 1 cubic centimeter
  • 1 liter is equal to 1 cubic decimeter
  • 1 cubic meter is equal to 1000 liters
• Converting volume units


  • 350 liters = 0.35 cubic meters
  • 935 milliliters = 935 cubic centimeters
• Commonly used units for pressure

  • Pascal
  • Atmosphere
  • Millimeters of mercury
  • Centimeters of mercury
  • Torr
  • Pound per square inch (psi)
• 1 atmosphere = 760 millimeters of mercury = 76 centimeters of mercury = 760 Torr = 101,325 Pascal = 14.6956 psi
• Converting pressure units


  • 6.0 Torr = 800 Pascal
  • 2.0 kilopascal = 0.02 atmosphere
• Temperature units and equivalents

  • Celsius
  • Fahrenheit
  • Kelvin
• 0 degrees Celsius = 273.15 Kelvin

  0 degrees Celsius = 32 degrees Fahrenheit
• Converting temperature units


  • 38 degrees Celsius = 311.15 Kelvin

  40 degrees Fahrenheit = 4 degrees Celsius
• Standard temperature and pressure (STP) conditions are 1.0 atmosphere pressure and 0 degrees Celsius temperature
• At STP, 1 mole of any gas occupies 22.4 liters of volume
• Kinetic molecular theory of gases

  • Volume occupied by gas particles is negligible compared to volume of gas

  Gas particles exert no attractive forces on each other or surroundings

  Gas particles are in constant random motion and move in straight lines until collision

  Collisions between gas particles are completely elastic

  Average kinetic energy of gas molecules is directly proportional to absolute temperature
• Kinetic molecular theory can be used to explain gas laws like Boyle's law and Charles' law