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A beaker containing orange liquid is surrounded by a molecular structure, a large drop with a leaf icon, and an electrical plug with a lightning bolt.

Master these alternative fuels quizzes or admit your green energy engine is dead

Fuels & Energy Chemistry

ZapStacks

5

Zaps

100

Forget the pump. From algae vats to corn-fed ethanol, the race for the next joule is on. Can you tell your biodiesel from your blue hydrogen before the tank runs dry? Prove you know what powers the future or get left at the starting line. The pressure is rising.

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ZapStacks

A stylized graphic featuring a flower, a laboratory flask, a fuel nozzle, and a molecular structure.
Biodiesel
20 Zaps · Hard
A dark grey dome-shaped structure is surrounded by a flame, a molecular model, and a cluster of orange and tan hexagonal shapes.
Biogas
20 Zaps · Hard
A corn cob, a chemical molecule, a laboratory flask, and a fuel pump nozzle are grouped together.
Ethanol Fuel
20 Zaps · Medium
A sun, a gas pump nozzle, and an octagonal shape with two connected H letters.
Hydrogen Fuel
20 Zaps · Medium
A gas pump nozzle, a large drop of amber liquid, a sunflower, and a laboratory flask.
Vegetable Oil Fuel
20 Zaps · Medium

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