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

chem 8th grade

atomic number the number of protons in the nucleus of an atom
electron cloud a region inside an atom where electrons are like;y to be found
Dimitri Mendeleev created the first periodic table
John Dalton believed "atoms cannot be created or destroyed" #all elements made of atoms which combine to form compounds"
therm unit of heat
plastic term used to describe a material that doesn't return to its original shape after stretching
adhesive able to stick
endo internal within
exo giving out
periodic table table of the elements arranged according to their atomic number
family/group vertical column of elements on the periodic table
period horizontal row of elements on the periodic table
chemical property a property of matter that describes a substance based on its ability to change into a new substance with different properties
physical property a property of matter that can be observed or measured without changing the identity of the matter
metals elements that are shiny,ductile,malleable andare good conductors of thermal energy and electrical current
non-metals elements that are not shiny are poor conductors of thermal energy and electrical current
metalloids elements that have properties of both metals and non-metals: sometimes known as semi-conductors
insulators materials that reduce or inhibit the transfer of thermal energy and electrical current
conductors materials that conduct thermal energy and electric current well
ions a charged particle that forms during chemical changes when one or more valence electrons transfer from one atom to another
Created by: agarbutt