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.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
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

Chap. 4 Atomic Struc

Chap. 4 Atomic Structure

atom the smallest particle of an element that retains its identify in a chemical reaction
atomic mass unit defined as 1/12 the mass of a carbon-12 atom
atomic number the number of protons in the nucleus of an atom of an element
electron a negatively charged subatomic particle found in the energy levels surrounding the nucleus
group a vertical column of elements in the periodic table; contains elements with similar properties
isotope atoms of the same element that have the same atomic number but different atomic masses
neutron a subatomic particle with no charge and a mass of 1 amu; found in the nucleus of the atom
nucleus tiny, dense central portion of the atom, composed of protons and neutrons
periodic table an arrangement of elements in which the elements are separated into groups based on a set of repeating properties
proton a positively charged subatomic particle found in the nucleus of an atom
Created by: annericson



Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards