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

Elements and Comp

CHEM 111

QuestionAnswer
sub atomic particle protons neutrons electrons
Proton 1+ mass 1.672622x10^-24
neutron 1.674927x10^-24
electron 1- mass 9.109383x10^-27
atomic nucleus small region of high density at the center of the atom
atomic mass unit (u) is defined as 1/(total # of p+ and n)
ion equal number of protons and electrons
cation more protons than electrons
anion more electrons than protons
isotopes same atomic number (Z) but different mass numbers (A)
atomic weight average mass of all naturally occurring isotopes of that element
alkali metals shinny solids that react vigorously with air, water
alkaline earth metals react with water from alkaline solutions and the noble gases
Noble gases are the least reactive elements 8A
Halogens the group 7A
transition metals representive elements and elements in B groups
main group elements elements in group A
Lanthanides and actinides periods 6 and 7
metals and non metals on the left side of the table and non metals on the right
allotropes forms of the same element that differ in their physical and chemical properties
molecular formula a molecular formula contains similar
Empirical formula represents the simplest whole number ratio of elements
structural formula shows the linkage of all the atoms in the molecule
condensed structural formula CH3CH2CH2CH20H List the atoms present in groups to indicate connectivity between the atoms
polyatomic ions are groups of covalently bonded atoms that carry an overall positive or negative charge
Created by: hrfalco