Particle model - density

• Density


  Describes how closely packed particles are in a solid, liquid or gas; the amount of mass per unit volume
• How the particles in a solid are arranged

  Closely packed in a regular structure

  
• How the particles in a liquid are arranged

  Closely packed in an irregular structure

  
• How the particles in a gas are arranged

  Spread out with no structure at all

  
• ρ = m/V


  The equation linking density, mass and volume

  
• ρ (the Greek letter "rho")

  The symbol for density
• m


  The symbol for mass
• V

  the symbol for volume
• Kilograms per cubic metre (kg/m³)

  The SI unit for density
• Grams per cubic centimetre (g/cm³)

  A more commonly used unit for density when mass is in grams (g) and volume is in cubic centimetres (cm³)
• Kilograms (kg)


  The SI unit for mass

  
• Cubic metres (m³)


  The SI unit for volume

  
• 1 kilogram (kg) is equal to _____ grams (g)

  1000 grams (g)

  
• 1 cubic metre (m³) is equal to _____ cubic centimetres (cm³)

  1,000,000 cubic centimetres (cm³)

  
• 1 gram per cubic centimetre (g/cm³) is equal to _____ kilograms per cubic metre (kg/m³)

  1000 kilograms per cubic metre (kg/m³)