pollutants of fuels

• What is meant by a fuel?

  Substances that release energy when burned
• How is coal commonly used?

  To generate electricity in power stations
• What elements do most fuels contain?

  Carbon and hydrogen
• What happens when fuels are burned?

  Carbon and hydrogen react with oxygen
• What is the product of burning methane?

  Carbon dioxide and water vapor
• What is complete combustion?

  Burning with plenty of oxygen
• Why is carbon dioxide considered a greenhouse gas?

  It contributes to climate change
• What is produced when oxygen is reduced 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, carbon monoxide
• What is sulfur dioxide produced from?

  Burning fuels that contain sulfur
• What do oxides of nitrogen cause?

  Breathing problems in humans
• How are oxides of nitrogen produced?

  High temperatures in engines cause reactions
• What is acid rain formed from?

  Sulfur dioxide and oxides of nitrogen
• What can acid rain damage?

  Trees and limestone buildings
• What are particulates produced from?

  Burning fuels like diesel
• What health risks do particulates pose?

  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 disrupt normal rainfall patterns