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

physic 17

queation and answer

what is the number of atoms in a typical breath equal to? the breaths of air in the world
what is an isotope? an atom that has one more or one less neutron in the nucleus
in the shell model of an atom, where are the electrons? in the shells
where did the atoms form in our bodies originally come from? atoms came from stars, and from other matter prior to our existence.
what determines the size of an atom? the number of electron
if you compare atoms to visible light, which is smaller? the atoms
what do molecules make up? some matter
what are molecules composed of? atoms
what is the cause of brownian motion? random movement of atoms and molecules
what makes up an element? the same kind of atoms
what element do we know about? slightly more that 100
what is plasma make up? mixture of ions and electons, electrically charge. it is a phase of matter
what are the phase of matter? plasmas solids liquids, and gases
Created by: 14_aherber