Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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
Know
remaining cards
Save
0:01
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:
Retries:
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

Atoms and Molecules

TermDefinition
atom basic building block of matter
matter anything that has mass and takes up space
mass the amount of matter that makes up a substance
volume the space taken up by a substance
proton subatomic particle found in the nucleus of an atom which has a positive charge
neutron subatomic particle found in the nucleus of an atom which has a neutral charge
electron subatomic particle found outside the nucleus of an atom which has a negative charge
job of proton determines the identity of an atom
job of neutron holds the nucleus together
job of electron involved in chemical reactions
atomic number the number of protons or electrons
atomic mass the number of protons + neutrons
periodic table chart of known elements organized by atomic number
molecule atoms bonded together to form a new substance
Created by: mlnicolas