Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Encarta

Hydrogen Fuel Cell

QuestionAnswer
fuel cell device in which the energy of a chemical reaction is converted directly into electricity.
Does a fuel cell run down like a battery? No
What does a fuel cell need to operate? it operates as long as fuel and an oxidant are supplied.
anode positive end of an electric circuit
cathode negative end of an electric circuit
What seperates the anode and the cathode? electrolytes
electrolytes are substances that allow ions to pass through them.
ions particles formed when a neutral atom or molecule gains or loses one or more electrons
what flows to the anode? fuel
what flows to the cathode? oxidant
what does the chemical reaction between the fuel and oxidant produce? electric current
What is supplied to the anode? hydrogen
What is supplied to the cathode? oxidant
what does the fuel cell do to the hydrogen atom? the fuel cell strip electrons from the hydrogen atom
Where does the electron go after it is stripped from the hydrogen atom? electrons move from the anode through the electric circuit to the cathode, creating an electric current that can be tapped to provide power.
where does the electron-deficient hydrogen atoms go? to the cathode
What happens after the electron difficient hydrogen atom go to the cathode? the electrons that was previously stripped from the hydrogen atom, recombine with the electron dificient hydrogen atom
What happens after the electron and the electron dificient hydrogen atom combine? the oxygen from the air reacts with the hydrogen to form water
what does the aerospace industry uses as fuel for their airplanes? uses liquid hydrogen as a fuel for rockets
What are the benefits of using liquid hydrogen as fuel for the planes? low density, which would decrease the amount of energy needed at takeoff increase the distance the plane can fly
Spacecraft use hydrogen as a primary rocket fuel that reacts with what? fluorine or oxygen to produce energy.
Created by: Tiffastic
Popular Chemistry sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards