Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

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.

Remove ads
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

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

ch 4 chem

for electromagnetic radiation, c equals what? frequency times wavelength
what is frequency measured in? hertz
what does electromagnetic radiation do as ittravels through space? it acts like a wave
what is a quantum of electromagnetic energy called? photon
what has to happen for an electron to change from ground state to excited state? energy must be absorbed
where is the one place an electron cannot be in an atom? the nucleus
where will you find an electron? the electron cloud
how many quantom numbers describe the energy state of an electron? 4
what are the main energy of an atom indicated by? principle quantom numbers
Created by: tyler self