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

SELMAN, CHAPTER 4

The Structure of Matter

VOCABDEFINITIONS
MATTER anything which occupies space and has inertia
ATOM the smallest particle of an element that has the characteristic properties of the element
MOLECULES the smallest subdivision of a substance having the characteristic properties of that substance
SUBSTANCE any material that has a definite, constant composition
COMPOUNDS are formed by the chemical union of two or more elements in definite proportions
NIELS BOHR proposed the most widely help theory of atomic structure
NUCLEUS contains most of the mass consisting of nucleons (protons and neutrons)
PROTONS elementary positive particles
NEUTRONS elementary neutral particles
ELECTRONS carry a single negative charge
VALENCE SHELLS K thru Q
ATOMIC NUMBER the # of protons or positive charges in the nucleus of an atom
MASS NUMBER the total # of protons and neutrons in the nucleus of an atom
ISOTOPES atoms that have the same # of protons but different # of neutrons
PERIOD TABLE table where elements are arranged from the lightest to the heaviest, or from the lowest atomic # to the highest
VALENCE determines the combining ability of the atom by the # of electrons in the outermost shell in the atom
IONIC BOND when 2 atoms are attracted to each other
COVALENT BOND the sharing of outer orbital electrons
IONIZATION the addition or removal of orbital electrons
ATOMIC # denoted by symbol Z
MASS # denoted by the letter A
NUCLIDE any particular kind of atom, having a specific number of protons and neutrons
Created by: ladyhope819
Popular Radiology 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