Busy. Please wait.

Forgot Password?

Don't have an account?  Sign up 

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 email address associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
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

Chapter 7 & 8 vocab

is the smallest piece of an element that still represents that element. Atom
particle with one negative charge Electron
most of an atom's mass and positive charge is concentrated in a small area in the center of the atom. Nucleus
is an atomic particle that has one positive charge. Proton
is a neutral particle that exists in the nucleus of an atom. Neutron
is an area around an atomic nucleus where an electron is most likely to be located. Electron Cloud
number of protons in an atom of an element. Atomic Number
are atoms of the same element that have different numbers of neutrons. Isotopes
is the sum of the number of protons and neutrons in an atom. Mass Number
is the average mass of the element's isotopes, weighted according to the abundance of each isotope. Average Atomic Mass
is an atom that is no longer neutral because it has gained or lost electrons. Ion
Created by: rviloria