Chapter 7, 8, and part of 9 Study Guide
1.
Answer with the appropriate label and name or formula
Ionic or
Name
Molecular
Chemical Formula
(covalent)
Lithium chloride
Magnesium nitride
nitrogen trifluoride
Lead (II) sulfide
dihydrogen monosulfide
Aluminum sulfide
Beryllium iodide
dihydrogen monoxide
carbon tetraiodide
Chemical
Formula
Ionic or
Molecular
(covalent)
Name
Mn2S3
Ag2O
C2Br4
KBr
MgS
CoN
C3F8
CaF2
CuF
2. Identify the following properties as ionic or molecular (covalent) C) Covalent Compound I) Ionic Compound
___1. the strongest bond
___7. High melting points
___2. conducts electricity when dissolved in water or melted
___ 8. 2 or more nonmetals
___3. Carbohydrates, nucleic acids, and proteins
___9. Metal and nonmetal
___4. Alternating positive and negative particles
___10. Crystal lattice structure at room temperature
___5. Sharing of one e- pair between two atoms
___11. Transfer of electrons from one atom to another
___6. Low melting points
___12. Liquids and gases at room temperature
3.
For the following molecules draw the Lewis Dot Symbols and circle the octet that every element has. (Hydrogen of
course only has two)
Example:
A) C2H6
4.
B) N2
C) H2O
D) NH3
E) H2CO
F) SiF4
Complete the Lewis Dot Structure of the following Molecular (covalent) compounds. Label electronegativitys with δand δ+. Label the molecular (covalent) compounds as Polar or Nonpolar.
CO2
PCl3
NH3
O2
H2O
H2CO