Save
Upgrade to remove ads
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

Atoms

7th Grade Physical Science

QuestionAnswer
The smallest particle into which an element can be divided and still be the same element. atom
The tool scientists used to see very small things. microscope
The theory created by John Dalton that said all matter is made up of atoms. The Atomic Theory
Particles within the atom that have a negative charge. electrons
A small, dense center inside of atoms that have a positive charge and surrounded by electrons. nucleus
Ernest Rutherford discovered that the nucleus is made up of smaller, positive charged particles called ? protons
A model created by Niels Bohr that explains how electrons in atoms behave (move). Bohr's model
Scientists James Chadwick discovered that a nucleus contains uncharged particles called ? neutrons
Electrons move within an area around the nucleus called ? electron cloud
The number of protons in the nucleus of an atom. atomic number
The number of protons and neutrons in an atom's nucleus is called? mass number
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