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.
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.
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

Atoms, Elements Comp

Element Found on the periodic table, building block of all matter
Molecule Two or more atoms bonded together to create something new
Nucleus The center of an atom. Protons and Neutrons are found here
Proton Positive charge, found in the nucleus
Electron Negative charge, found in the electron cloud
Neutron Neutral or No charge, found in the nucleus
Strong Force Holds the protons and neutrons in the nucleus
Shell Level in the electron cloud
1st shell Holds 2 electrons
2nd shell Holds 8 electrons
3rd shell Holds 18 electrons
Atomic Number Number of protons or electrons an atom has.
Atomic Weight (mass) Number of protons plus the number of neutrons
How do you find the number of neutrons? Atomic number -- Atomic weight (mass) you must round to the whole number.
What does this formula make H2O? Water molecule
Created by: cpanici