Biofuel Jeopardy!

Waterford Union High School

Rules

• Each team sends one person per turn. They cannot get help from their team

• First to “buzz” in gets 15 seconds to answer. • If the first person to buzz cannot get the answer, the

second team can buzz in. Once they buzz in, they too have 15 seconds. They also cannot get help.

• You either gain or lose points on each turn.• If no team buzzes within 10 seconds, the question

ends and the answer is given.

$100 $100 $100 $100 $100 $100

$200 $200 $200 $200 $200 $200

$300 $300 $300 $300 $300 $300

$400 $400 $400 $400 $400 $400

$500 $500 $500 $500 $500 $500

Fossil Fuel Facts

Combustion Concepts

CO2: Get a Clue

BiofuelBenefits

Transester-rification

EngineInterest

Fossil Fuel Facts

• Fossil fuels currently provide ___% of energy used in the United States

• 85%

Fossil Fuel Facts

• Fossil fuels formed from…• Dead plants and animals

Fossil Fuel Facts

• These are all of the elements found in a hydrocarbon

• Hydrogen and Carbon

Fossil Fuel Facts

• Petroleum products are separated from each other by ___ the crude petroleum.

• Heating (or boiling)

Fossil Fuel Facts

• In order for a hydrocarbon to form, organic matter had to be exposed to intense ______ and ______

• Heat and pressure

Combustion Concepts

• These are the two byproducts of combustion of fuel

• Carbon dioxide and water

Combustion Concepts

• Combustion is an ____________ reaction• Exothermic

Combustion Concepts

• Soot and carbon monoxide occur when a combustion reaction ____________

• Does not occur completely

Combustion Concepts

• For something to burn more cleanly, it has to burn more_______

• Completely

Combustion Concepts

• A reaction that absorbs energy would be called an ________ reaction

• Endothermic

CO2: Get a Clue

• CO2 consists of the following molecules• One carbon and two oxygens

CO2: Get a Clue

• This process absorbs CO2 from the atmosphere

• Photosynthesis

CO2: Get a Clue

• How does CO2 change surface temperatures?• It absorbs and re-emits solar radiation,

slowing its release into space

CO2: Get a Clue

• CO2 levels are currently at _____ppm• 395 ppm

CO2: Get a Clue

• US Citizens contribute _____% of CO2 emissions

• 25% (5x their proportion of the world’s population)

Biofuel Benefits

• What does it mean that ethanol and biodiesel are “carbon neutral”?

• There are no net emissions of carbon dioxide

Biofuel Benefits

• If ethanol produces carbon dioxide when it is burned, how can it be “carbon neutral”?

• The crops that are used to produce ethanol absorb the CO2 that is released when it is burned

Biofuel Benefits

• When combusted, ethanol releases ________ energy than it requires to be produced

• More

Biofuel Benefits

• Ethanol will have a ____ gas mileage compared to gasoline

• Lower

Biofuel Benefits

• Ethanol burns more completely because of what element found in its molecular structure?

• Oxygen

Transesterification

• Transesterification is a chemical reaction in which the branched chains of an oil molecule are….

• Straightened out

Transesterification

• Besides oil, transesterification involves what other two ingredients?

• Methanol and a catalyst (such as KOH)

Transesterification

• To what temperature must the oil be heated to in order for transesterification to occur?

• 55-57o

Transesterification

• To wash biodiesel, we must use….• Filtered water

Transesterification

• Drying biodiesel means to ….• Remove all water after washing

Engine Interest

• The energy in fuel is converted into motion how?

• The fuel explodes, pushing down a piston that turns a crankshaft

Engine Interest

• In order for combustion to occur in a gasoline engine, you need a ________ _______

• Spark Plug.

Engine Interest

• Combustion in a diesel engine is created by …• Compressing diesel fuel until it heats to the

point of combustion

Engine Interest

• Diesel engines are more efficient because why?

• The compressed air has a higher concentration of oxygen

Engine Interest

• The first diesel engine ran on …• Peanut Oil

FINAL JEOPARDY

• Make your wagers!

• Combustion of octane produces ___ times more CO2 than the combustion of ethanol

• Four times (8 CO2 vs. 2 CO2)