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Combustion Reactions Slideshow123


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science ppt for combustion reations

science ppt for combustion reations

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  • 1. Combustion Reactions By: Nolan Begley Mrs.Sipiera 2010
  • 2. Types of Chemical reactions
    • Combustion
    • Synthesis
    • Decomposition
    • Single displacement
    • Double displacement
    • Acid-base
  • 3. What is combustion reaction?
    • When oxygen combines with another compound to form water and carbon dioxide. These reactions are exothermic which means they produce heat.
  • 4. What is the Fire Triangle?
    • A simple model for understanding the ingredients necessary for most fires. Without heat the fire can’t begin. Without fuel the fire will stop. Without oxygen the fire won’t begin or continue.
  • 5. What is activation energy?
    • The energy that must be overcome in order for a chemical reaction to occur. Activation energy may also be defined as the minimum energy to start a chemical reaction.
  • 6. Why is heat/energy necessary part of the fire triangle
    • Heat and energy are needed in a fire triangle because oxygen, heat, and fuel is what provides energy and hotness for the fire in the triangle. If one of the three things is missing the fire can not begin.
  • 7. How is a cook top of a stove a real life example of a fire triangle
    • A non electric stove needs heat, fuel, and oxygen to make pans or plates light up and get hot to cook food.
  • 8. What is a combustion engine
    • Engines that are driven by energy from combustion. The expansion of the high temperature and pressure gases apply a force, directly, to the turbine blades and apply mechanical energy.
  • 9. How a combustion engine works
    • Internal- an engine in which the combustion of a fuel occurs with an oxidizer in a combustion chamber.
    • External- Is a heat engine where an (internal) working fluid is heated by combustion of an external source, through the engine wall or a heat exchanger. These two cause tiny explosions and make the engine roar and the car goes faster.
  • 10. Difference of NASCAR cars and street cars.
    • NASCAR cars- NASCAR's have more combustions in their engines because they’re racing and going at much higher speeds. The more combustions the faster it goes. All sub systems are designed to run at high speeds and temperatures.
    • Street cars- Don’t need nitrous oxide because they don’t need more fuel. They don’t need more fuel because they’re not racing at high speeds. Their engines are smaller then the Racing cars. They have mufflers and racing cars do not.
  • 11. How does nitrous oxide help engines perform better.
    • When you heat nitrous oxide to about 300 C it splits into oxygen and nitrogen. So the injection of nitrous oxide into an engine means that more oxygen is available during combustion. Because you have more oxygen, you can inject more fuel, allowing the same engine to produce more power.
  • 12. NASCAR cheaters document
    • When the engine sucks up the air that we breath. Explosion is successful because oxygen makes up about 1/5 of our air and oxygen loves to burn. More oxygen will result in a more complete combustion of the fuel and more power along with more speed.
  • 13. Resources