combustion of hydrocarbons

• What should you be able to describe by the end of the video?

  How hydrocarbons can be used as fuels
• What is the result of the complete combustion of hydrocarbons when oxygen is unlimited?

  Produces carbon dioxide and water
• What happens to the properties of hydrocarbons as the size of the molecule increases?

  Less flammable and higher boiling points
• What is the definition of combustion in the context of hydrocarbons?

  Combustion means burning hydrocarbons
• How do the carbon and hydrogen atoms behave during combustion?

  They react with oxygen and are oxidized
• What is the first step in balancing the combustion equation for methane?

  Balance the carbon atoms
• How do you balance the hydrogen atoms in the combustion of methane?

  Put a large two in front of water
• What is the total number of oxygen atoms on the right side after balancing the combustion of methane?

  Four oxygen atoms in total
• What do you need to do to balance the oxygen atoms in the combustion equation?

  Place a large two in front of O2
• What is the process for balancing the combustion equation for a hydrocarbon?

  1. Balance carbon atoms
  2. Balance hydrogen atoms
  3. Balance oxygen atoms
• What is the combustion equation for methane?

  CH4 + 2O2 → CO2 + 2H2O
• How do you balance the carbon atoms in the combustion of propane?

  Place a large three in front of CO2
• How do you balance the hydrogen atoms in the combustion of propane?

  Place a large four in front of H2O
• What is the total number of oxygen atoms needed for the complete combustion of propane?

  Ten oxygen atoms in total
• How do you balance the oxygen atoms in the combustion of propane?

  Place a large five in front of O2
• What are the key facts about hydrocarbon fuels and combustion?

  • Hydrocarbon fuels release energy when combusted
  • Carbon and hydrogen are oxidized during combustion
  • Complete combustion produces CO2 and H2O