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

4 Atomic Structure

Early Models, Subatomic Particles,Periodic Table

What is the smallest particle of an element that keeps its chemical and physical properties? atom
The negatively charged subatomic particles are called_________. electrons
The small, positive, center of an atom is called the _________. nucleus
The positively charged particle located inside the nucleus is called the ________. protons
The subatomic particle without a charge and has a mass of 1amu is called the _________. neutron
The number of protons in the nucleus of an atom is called the __________. atomic number
The number of both protons and neutrons in the nucleus of an atom is called the __________. mass number
Atoms of elements that have different numbers of neutrons are called _________. isotopes
The mass of 1 proton or 1 neutron; 1/12 the mass of Carbon-12. atomic mass unit
The average mass of all the isotopes of an element based on the percent abundance. atomic mass
An arrangement of the elements shown in a table. periodic table
The vertical columns on the periodic table are called _________. groups (or families)
The horizontal rows on the periodic table are called _________. periods
A glowing beam of light produced when a cathode ray tube is connected to electricity. cathode ray
Created by: jpendleton