Save
Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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
share
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

Atomic Theory Chem

TermDefinition
Planck's Hypothesis Energy is quantized, and energy of a wavelength is related to its frequency
the higher the frequency... ... the higher the energy
wavelength and frequency are _____ proportional inversely
matter has wavelike properties called wave-particle duality of nature
quantum mechanics very small pieces of matter moving very quickly
Newtonian mechanics matter under usual conditions
Heisenburg Uncertainty Principle Its impossible to know both the location and direction of an atom (RIP Bohr model)
Scroedinger's Equations modern atomic theory; describes with 90% probability where electrons are likely to be found
Aufbau Principle electrons occupy the lowest energy orbitals first
Pauli Exclusion Principle an atomic orbital can only hold two electrons, each with a different spin
Hund's Rule with orbitals of the same energy, single electrons occupy each orbital before they pair up
Principle Quantum Number (n) tells the principle energy level of the electron and distance from nucleus
the greatest number of electrons that can be found is each energy level can be calculated with the equation: 2n^2
Second Quantum Number (l) tells you the sublevels of the electron (s, p, d, f)
S holds 2 electrons and is shaped like a sphere
P holds 6 electrons and is shaped like a dumbell
D holds 10 electrons
F holds 14 electrons
Third Quantum Number (m): the space occupied by one pair of electrons is called an orbital (each sublevel has half the number of orbitals as it does electrons)
Fourth Quantum Number (s) Spin (in a given orbital, each electron must *probably* spin in a different direction)
Created by: msullyart
 

 



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