Cards (10)

  • What is a major source of atmospheric pollutants?
    • Combustion of fuels
  • What elements are contained in most fuels?
    • Carbon
    • Hydrogen
    • Sulfur (may also contain)
  • What gases may be released when a fuel burns in the atmosphere?
    • Carbon dioxide
    • Water (vapour)
    • Carbon monoxide
    • Oxides of nitrogen
    • Solid particles
    • Unburned hydrocarbons
  • What is partial combustion?
    When there is not enough oxygen during combustion, some fuel does not burn completely.
  • What are the pollutants released during partial combustion?
    Solid particles of soot (carbon), carbon monoxide, and unburnt fuel.
  • What is the energy form released during the combustion of hydrocarbons?
    Heat energy is released.
  • What are the products formed when carbon and hydrogen in fuels are oxidized during combustion?
    • Carbon dioxide
    • Water
  • What are the properties and effects of carbon monoxide?
    • Colourless
    • Odourless
    • Toxic gas
    • Not easy to detect
  • What are the environmental and human health effects of sulfur dioxide and oxides of nitrogen?
    • Cause acid rain
    • Lead to respiratory problems in humans
  • What effects do particulates have?
    • Cause global dimming
    • Lead to human health problems