Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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. Your email address is only used to allow you to reset your password. See 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
edit
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

physical science ex

QuestionAnswer
J.J Thomson cathode ray tube discovered the electron used the plumpudding
Rutherford wanted to see how dense an atom is used radioactivity used alpha particles and shot them at gold foil
Rutherfords outcome of expirement alpha particles are deflected by it if they get close enough because at an atom there is a small dense positive piece of the center
Democritus proposed tthat the world was made of two things space and particles
Arstiole proposed that all matter is a continous and made of a blend of 4 things fire air earth water and the blend of these substances was called hyle
John Dalton Atomic theory all matter is made of tiny indivisible particles called atoms atoms of the same element are identical no new atoms are created or destroyed
Bohr's model a quantum of energy is the amount of energy required to move an electron from its present energy level to the next higher level
Schrodinger derived a mathematical equation that described the energy and position of the electrons in an atom
Chadwick bombarded a thin sheet of beryllium with alpha particles he discovered neutrons
Electrons negatively charged particles j.j. thomson
Protons positively charged 1840 heavier than he electron E. Goldstien ,Rutherford
Neutrons no charge but the same mass as a proton J. Chadwick
atomic number number of protons in the nucleus
mass number number of protons + number of nuetrons or atomic number +number of nuetrons
Isotopes atoms of the same element with different numbers of neutrons
Dmitri Mendelyev constructed a table of known elements in order of increasing mass
Henry Moseley arranged elements according to increasing mass
Created by: 100000298430132
Popular Physical Science sets

 

 



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