Pollutants from fuels

• What is the main topic of the video?

  Combustion of fuels and pollutants
• What should you be able to describe by the end of the video?

  How combustion releases pollutants and their effects
• What is a fuel?

  Substance that releases energy when burned
• How is coal commonly used?

  To generate electricity in power stations
• What are hydrocarbons used for?

  To power vehicles like cars
• What elements do most fuels contain?

  Carbon and hydrogen
• What happens to carbon and hydrogen atoms during combustion?

  They react with oxygen in the air
• What is the product of complete combustion of methane?

  Carbon dioxide and water vapor
• What is required for complete combustion to occur?

  Plenty of oxygen
• What is carbon dioxide classified as?

  A greenhouse gas
• What is produced when there is a reduced amount of oxygen during combustion?

  Carbon monoxide
• Why is carbon monoxide dangerous?

  It is a toxic gas with no color
• What are the three products of combustion mentioned?

  Carbon dioxide, water vapor, and carbon monoxide
• What pollutants are produced from burning coal?

  Sulfur dioxide and oxides of nitrogen
• How is sulfur dioxide produced during combustion?

  Sulfur atoms in coal react with oxygen
• What causes the production of oxides of nitrogen?

  High temperatures in engines
• What are the effects of sulfur dioxide and oxides of nitrogen?

  Breathing problems and acid rain
• What is acid rain formed from?

  Pollutants dissolving in rainwater
• What can acid rain damage?

  Trees and limestone buildings
• What are particulates produced from burning fuels?

  Black particles of carbon and unburned hydrocarbons
• What health risks are associated with particulates?

  Increased risk of heart and lung disease
• What is global dimming?

  Reduction of sunlight reaching Earth's surface
• How might global dimming affect rainfall patterns?

  It could alter rainfall distribution
• What are the main pollutants produced from burning fuels?

  • Carbon dioxide
  • Water vapor
  • Carbon monoxide
  • Sulfur dioxide
  • Oxides of nitrogen (NOx)
  • Particulates
• What are the environmental effects of pollutants from combustion?

  • Breathing problems in humans
  • Formation of acid rain
  • Damage to trees and buildings
  • Global dimming affecting sunlight and rainfall