vocab
Combustion
Burning wood, gasoline, or candles (releases heat)
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This gas, making up about 21% of Earth's atmosphere, is the essential oxidizing agent required for most combustion.
What is Oxygen?
what requires a spark plug
diesel
What is the main purpose of an internal combustion engine?
To turn chemical energy (from fuel) into thermal energy (heat from combustion) and finally into mechanical energy (movement).
exothermic
Products have less energy than reactants → RELEASES HEAT
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ivy Layla Evelyn kassidy
What are the three things needed for a combustion reaction to happen (the "Fire Triangle")?
Fuel, Oxygen, and Heat.
What two elements are the only ingredients in a "Hydrocarbon" fuel?
Carbon and Hydrogen.
What part of the engine moves up and down to turn the wheels, and what causes it to move?
The piston
endothermic
Products have more energy than reactants → TAKES IN HEAT
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niah
What are the two main products created when a hydrocarbon burns completely?
Carbon Dioxide and Water
Why are hydrocarbons like propane and methane considered good fuels?
Because they have high energy bonds.
Why do engines need a "Spark Plug"
The spark plug provides the Activation Energy
Neutralization
Mixing strong acids and bases.
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Niah
If there isn't enough oxygen during a fire, what poisonous gas is produced instead of CO2
Carbon Monoxide
In what state of matter (Solid, Liquid, or Gas) are small hydrocarbon fuels like
Gas
Why does an engine produce "exhaust" like Carbon Dioxide?
Because an engine is just a controlled combustion reaction
Energy Production
Power plant generators.
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mrs Cassidy
What happens during incomplete combustion if there isn't enough oxygen present?
Instead of just making c02, the reaction produces Carbon Monoxide
Is Glucose considered a hydrocarbon fuel?
no
Why do car engines have a Catalytic Converter
A catalytic converter is a device that helps finish the chemical reactions that the engine didn't quite complete.