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.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

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.

Remove ads
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

science vocab21

chapter 4 section 1 13cards

group elements in the same vertical column of the periodic table (also called a family)
family elements in the same vertical column of the periodic table (also called a group)
chemical symbol a one or two letter representation of an element
proton a small positively charged particle in the nucleus of an atom
neutron a small particle in the nucleus of the atom with no electric charge
nucleus the central core of an atom containing protons and usually neutrons
electron a tiny negatively charged particle that moves around the nucleus of an atom
atomic number the number of protons in the nucleus of an atom
valence electron one of the electrons farthest away from the nucleus of an atom; these electrons are involved in a chemical reaction.
atomic mass the average mass of one atom of an element
periodic table a chart of the elements showing the repeating pattern of their properties
period a horizontal roe of elements in the periodic table
atomic mass unit (AMU) a unit used to measure the mass of particles in atoms (a proton or neutron has a mass of 1 AMU)
Created by: bbdevil