CHEM 120 Exam 2 Questions and Answers A+ Rated

CHEM 120 Exam 2 Questions and
Answers A+ Rated
non-bonding electron pairs - -don't bond or share electrons

- bonding electron pairs - -share electrons and create a bond

- Lewis Structure rules - -1. count total number of valence electrons for all
atoms
2. make every atom "happy" with full valence shells
3. count electrons in structure (if the number is the same as #1 then it is
done; if not, form double bonds)

- Mole is a ______. - -quantity

- Avagadro's number - -6.02 x 10^23

- Units of concentration - -mol/L (Molarity or M)

- polyatomic ions - -covalent compounds that have a charge

- Carbonate - -

- Bicarbonate - -

- Sulfite - -

- Phosphate - -

- Nitrite - -

- Nitrate - -

- Hydroxide - -

- Cyanide - -

- Ammonium - -

- organic chemistry - -chemistry of compounds containing carbon

- Hydrocarbons - -compounds that contain carbon and hydrogen

- Amino - -NH2