Flames and Fuel
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Questions and Answers

Which part of a fire is considered a flame?

  • The visible part (correct)
  • The thin zone
  • The gaseous part
  • The exothermic reaction

    • What happens when flames are hot enough to have ionized gaseous components of sufficient density?

  • They produce more heat
  • They turn blue
  • They become plasma (correct)
  • They extinguish

    • What determines the color and temperature of a flame?

  • The weather conditions
  • The type of fuel involved (correct)
  • The amount of oxygen present
  • The size of the fire

    • What happens when a lighter is held to a candle?

    <p>The candle wax vaporizes (B)</p> Signup and view all the answers

    What is the term for the process in which fuel molecules vaporize and react with oxygen in the air to sustain a flame?

    <p>Combustion (D)</p> Signup and view all the answers

    Which term describes the chemical reaction between a fuel and an oxidant that produces gaseous products and a characteristic flame?

    <p>Combustion (A)</p> Signup and view all the answers

    What is the term for the process in which solid fuels undergo endothermic reactions to produce gaseous fuels that can sustain combustion?

    <p>Pyrolysis (B)</p> Signup and view all the answers

    What is the visible indicator of a combustion reaction?

    <p>Flame (C)</p> Signup and view all the answers

    What is the term for the minimum amount of energy required to initiate a combustion reaction?

    <p>Activation energy (D)</p> Signup and view all the answers

    What is the term for the sequence of elementary radical reactions that often occur during combustion?

    <p>Combustion (A)</p> Signup and view all the answers

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