Save
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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
share
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

Chem Quiz

TermDefinition
John Dalton English Scientist, 1803
JJ Thomson English Scientist, 1897
Robert Millikan American Scientist, 1909
Ernest Rutherford English Scientist, 1912
Neils Bohr Danish Physicist, 1913
Eugen Goldstein German Physicist, 1885
James Chadwick English Scientist, 1932
John Dalton(description) 5 Postulates to his theory, all matter is made up of small indivisible particles called atoms, atoms cannot be created nor destroyed in chemical reactions
JJ Thomson(description) Did research with a cathode ray tube, discovered the electron, his model is called plum pudding: all electrons and protons are evenly distributed
Robert Millikan (description) Determined the charge of an electron with oil drop experiment: suspended tiny charged droplets of oil between two metal electrodes by balancing downward gravitational force with upward drag and electric forces.
Ernest Rutherford(description) Did the gold foil experiment: When he shot a beam of alpha particles at a sheet of gold foil, a few of the particles were deflected. He concluded that a tiny, dense nucleus was causing the deflections.
Neils Bohr(description) Solar Sytem model: Depicts atom as small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus
Eugen Goldstein(description) Used a cathode ray tube filled with hydrogen gas and discovered the charge and mass of a proton
James Chadwick(description) Found evidence for existence of the neutron and the discovery of what makes up the total mass of an atom, experiment:Beryllium, when bombarded by alpha particles, emitted a very energetic stream of radiation, electrons mass is negligible
Created by: roboticme
 

 



Voices

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:
Retries:
restart all cards