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.

Remove Ads
Don't know
Know
remaining cards
Save
0:01
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:
Retries:
restart all cards




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

Introduction to Atom

QuestionAnswer
What is a proton? a positively charged particle.
Who was democritus? He believed an atom was a single hard particle.
WHo was aristotle? He thought all things were compsed of: air; earth; water; and fire.
What is an atom? The smallest unit of an element that maintais the properties of the element.
Who is John Dalton? All substances are made of atoms.
Who was Joseph Thomson? He proved the existance of negatively charged particles inside the atom.
Who was Ernest Rutherford? Proved atoms are mostly space and the nucleus is very dense and has a postive electical charge.
Who was Bohr? He proposed that electrons moved around an atom in a certain path or energy level.
Who were SHrodinger and Heisenberg? The exact path of an electron is unpredictable.
What is the electron cloud? The regions where electrons are most likely to be found.
What is the nucleus? The central part of the atom which contains protons, atomic mass, neutrons, and a mass number.
What is the atomic number? The number of protons in the nucleus.
What is a neutron? small particles with no electrical charge.
What is an electron? Negatively charged particles found outside of the atom in the electron cloud.
What is an ion? an electrically charged atom or group of atoms.
What is an isotope? Atoms of an element w/ the same # of protons but whose neuton # differs.
How does the the Gravitational force apply to atoms? B/c atoms are so small the gravitational force is small.
What is the Electromagnetic Force? Opposites arrtact. Same charges repel.
What is the strong force? Prevents repulsion of protons in the nucleus.
What is the weak force? A neutron can trun into a proton and an electron.
Created by: gymnastgal23