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

Grade 8 Ch 3

Vocabulary from Ch 3 Building Blocks book

Mendeleev organized the first periodic table
atomic mass the average mass of one atom of the element
periodic table a table of elements arranged in a regular, repeating pattern
nucleus the core of the atom
proton a subatomic particle with a + charge
neutron a subatomic particle with no charge
electron a subatomic particle with a - charge
atomic mass unit (amu) the mass of a proton or neutron
atomic number the number of protons in an atom's nucleus
chemical symbol a shortened form for an element
group the elements in a column on the periodic table
family another name for group
period a row on the periodic table
valence electrons electrons located in the outer most shell that are involved in forming chemical bonds
malleable material that can be pounded into shapes
ductile material that can be pulled out, or drawn, into a long wire
conductor materials that can transmit heat and electricity
reactivity the ease or speed that an element combines or reacts with other elements or compounds
corrosion the process in which metal react with oxygen to form metal oxides
alloy a mixture of metals
diatomic molecules nonmetals that form molecules of two identical atoms
semiconductors substances that can carry electricity under some conditions, and under other conditions, cannot
plasma a state of matter in which atoms are stripped of their electrons and the nuclei are packed closely together
nuclear fusion atomic nuclei combine to form a larger nucleus, releasing huge amounts of energy
supernova a tremendous explosion that breaks apart a massive star producing high temperatures
Created by: Dcoleman