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

1st Semester Vocab.

20 words and definitions

Atom a part of a particle considered to be irreducible constituent of a specified system.
Element A fundamental, essential or irreducible constituent of a composite entity.
Nucleous the center of an atom
Electron Shell a grouping of electrons surrounding the nucleus of an atom
Proton a stable, positively charged subatomic particle in the Baryon family
Neutron an electrically neutral subatomic particle in the Baryon family
Electron A stable subatomic particle which and has a negative charge
Atomic Number The number of protons in an atomic nucleous
Atomic Mass the mass of an isotope of an element in atomic mass units
Valence Electron an electron in the outer shell of an atom
Nonmetals any element that lacks the physical and chemical properties of a metal
Metal any electro positive element that usually has a shiny surface and good conductors of heat
Metalloid a nonmetallic element that has some of the chemical properties of a metal
Group a column in the periodic table in which elements are placed with the same properties
Period Horizontal rows in the periodic table that represents the number of electron shells in that row
Transition Elements elements whos atoms have an incomplete sub-shell
Representative Elements elements in the first two groups and the last six of the periodic table
Ion an atom or a group of atoms that has acquired a net electric charge by gaining or losing one or more electrons
Isotope one of two or more atoms having the same atomic number but a different mass number
Law of Conservation of Mass matter can't be made nor destroyed, it can only be changed physically
Created by: k1212090