Basics of Hydrogen
What is hydrogen energy mainly used for?
Producing clean electricity or fuel.
What device turns hydrogen + oxygen into electricity?
A fuel cell
Does hydrogen fuel create carbon dioxide when used?
No
What company makes the hydrogen car called the Mirai?
Toyota
What is the most common element in the universe?
Hydrogen
What is the chemical symbol for hydrogen?
H₂
What is the only waste product made by hydrogen fuel cells?
Water
What type of energy can be used to create completely clean hydrogen?
Renewable energy (solar, wind, hydro)
What space agency uses hydrogen to launch rockets?
NASA
Hydrogen has how many times more energy per kilogram than gasoline?
Almost three times
Why is hydrogen considered an “alternate energy source”?
Because it can replace fossil fuels without creating pollution.
What part of the hydrogen atom creates the electric current in a fuel cell?
The electrons
What major environmental problem does hydrogen help reduce?
Greenhouse gas emissions
How long does it take to refuel a hydrogen car?
About 3–5 minutes
What color is hydrogen gas?
It’s colorless
What element does hydrogen usually combine with in water?
Oxygen
Besides fuel cells, what is the other main way hydrogen can be used to create energy?
Burning it like gasoline (combustion)
Why is hydrogen better for cities with air pollution?
It produces no harmful exhaust.
What major challenge slows down the growth of hydrogen cars?
Not enough hydrogen fueling stations.
What is the name of Mickey Mouse’s dog?
Pluto
What process uses electricity to create hydrogen from water?
Electrolysis
What gas is needed with hydrogen to complete the reaction in a fuel cell?
Oxygen
What is the downside of producing hydrogen using natural gas?
It uses fossil fuels and causes emissions.
Name one industry (besides cars) that can use hydrogen energy.
Shipping, aviation, factories, or power plants
What does hydrogen become after reacting in a fuel cell?
Water (H₂O)