Vocabulary
a fuel derived from living matter
Biofuel
What is biodiesel typically composed of?
Crude and vegerable oils
Name two independent variables from our lab
Amount of yeast, Amount of sugar, Amount of water, temperature of water, swirl or no swirl
What is the unit used for measuring enthalpy
kJ/mol
What is the subscript?
How many atoms there are
a hydrocarbon fuel that is an alternative to gas or diesel; these include less commonly used fossil fuels or biofuels.
Alternative Combustion Fuels
Biogas (methane) is produced when _____ is not present in the chemical process
Oxygen (O₂)
What was our dependent variable
Amount of CO₂ produce in mL
How do you calculate the change in enthalpy (ΔH) in a chemical reaction?
What is a coefficient?
How many molecules there are in a reaction.
a fuel derived from living matter that is intended as a substitute to diesel
Biodiesel
What is the name of the process that makes bioethanol a usable fuel?
Fermentation
What were the products of our chemical reaction we were conducting?
Ethanol and Carbon Dioxide
What is the difference between C - C and C=C when looking at them in the energy table.
- : Single bond
= : Double bond
Where do plants obtain carbon dioxide from?
They obtain it from the atmosphere and absorb it for photosynthesis.
the amount of energy stored in a given system, substance, or region of space per unit volume
Bond Energy
True or False: Biofuels emit the same amount of carbon dioxide (CO₂) as regular fossil fuels when combusted.
True
Which independent variable produces the most carbon dioxide
What does a negative number in change of enthalpy (ΔH) signify
The amount of energy released into the environment.
Why do we need to find an alternative for the burning of fossil fuels?
Fossil fuels emit immense amounts of carbon into the atmosphere, affecting global warming. We will also run out of fossil fuels in the near future.
a colorless, flammable liquid that is produced by the natural fermentation of sugars
Ethanol
What are 2 negative impacts of the use biofuels?
- Carbon dioxide emissions
- Competition of crop usage (Food vs fuel)
- expensive
In the chemical reaction of breaking down sugar through the use of yeast, what organic molecule produces carbon dioxide when broken down?
Pyruvate
DOUBLE JEAPORDY
5,361 kJ/Mol
(If there are no units it is not correct)
Who is Mr. Castillos favorite baseball team?
Chicago White Sox