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

sc 15 vocab words

model a representation to show the structure of something
atom the smallest unit of an element.
nucleus the central region
electron negatively charged subatomic particle
atomic number the number of protons in the nucleus of an atom. it is the same for all atoms of an element
atomic, nuclear, chemical symbol A chemical symbol is a 1-, 2-, or 3-letter internationally agreed code for a chemical element, usually derived from the name of the element, often in Latin.
subatomic particles a particle smaller than an atom
molecule the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound.
Lewis structures are diagrams that show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.
Bohr model The simplest modern picture of the structure of the atom
electron shell The electrons in the outermost occupied shell that determine the chemical properties of the atom
valence electron the electron that is found in the outermost she of an atom and that determines the atoms chemical properties
matter anything that occupies space
proton positively charged subatomic particle that is found in the nucleus of an atom
neutron negatively charged subatomic particle that is found in the nucleus of an atom
Created by: dylanblackett