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


4.2 structure of the nuclear atom

scientists disproved dalton's "indivisible" atom by detecting... subatomic particles: proton, neutron, electron
anatomy of an atom atom=nucleus+electron cloud *an atom is mostly empty space
the mass of an atom is in the... nucleus
atom the smallest particle of an element that retains the chemical properties of that element
the electron discovered by J.J. Thomson
Thomson knew the Cathode ray was composed of negatively charged particles because the rays are deflected away from a negatively charged object
Robert Millikan measured the exact...of the negative charge value
the very small mass of an electron compared to the relatively large mass of an atom is an indication of what? that there is probably a positively charged particle in the atom that has much more mass than the electron.
Created by: v-ball7