Definition of Fuel and Energy Production
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Definition of Fuel and Energy Production

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Questions and Answers

What is the main source of energy for wood?

  • Heat energy
  • Glucose energy
  • Chemical energy from burning
  • Light energy from the sun (correct)
  • How are fossil fuels like coal and oil formed?

  • Through chemical reactions in the Earth's core
  • By compression of layers of sediment and rock over millions of years (correct)
  • By burning dead animals
  • By extracting hydrogen from water
  • What is released when fuels are burned?

  • Light energy
  • Water vapor
  • Glucose
  • Chemical energy (correct)
  • Why can gasoline fuel be used in cars?

    <p>Because it can produce heat and power when burned</p> Signup and view all the answers

    Where did the energy in fossil fuels originally come from?

    <p>Sunlight captured by plants millions of years ago</p> Signup and view all the answers

    What is the process called when you burn a fuel in the presence of an oxidant?

    <p>Combustion</p> Signup and view all the answers

    Why are combustion reactions known to be exothermic?

    <p>Because they release heat</p> Signup and view all the answers

    What are the products of a combustion reaction involving methane and oxygen?

    <p>Carbon Dioxide + Water + Energy</p> Signup and view all the answers

    Why does combustion release heat energy?

    <p>Because the bonds in fuel molecules have less energy than the bonds in water and carbon dioxide</p> Signup and view all the answers

    What happens to the excess energy in a combustion reaction?

    <p>It is released as heat</p> Signup and view all the answers

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