GCC Chem 110 EXAM 3
Prof. Jamieson
Chapter 5a- Bonding in Molecules and Nomenclature
1. Types of bonds
a. Nonpolar covalent (between nonmetals of similar electronegativities)
b. Polar Covalent (between nonmetals of different electronegativities)
c. Ionic (between a metal and a nonmetal with very different
electronegativities)
2. Preferred charges of common ions
3. Preferred charges of transition metals
a. Naming ions with variable oxidation states
4. Polyatomic ions (from handout sheet)
5. Naming compounds – Nomenclature (handout sheet under Files tab may
help)
a. Ionic:
Name the metal + name the nonmetal/ polyatomic ion
b. Molecular:
Nonmetal + nonmetal→ use prefixes
c. Acids:
Identify anion in acid, change suffix
Chapter 5b- How to visualize compounds and molecules
1. Electronegativity and the trend on periodic table
2. Types of bonds
a. Ionic
b. Covalent
i. Nonpolar
ii. Polar
3. Lewis dot structures- be able to draw them
a. For atoms (Lewis symbol)
b. For molecules
i. Double check:
1. correct # total valence electrons
2. The octet rule for each atom (except for H, Be, B)
c. Resonance structures
4. VSEPR theory
a. Count # of electron groups
b. Electron geometry
c. Molecular geometry
d. Bond angles
5. Polarity of a molecule → dipole
Chapter 6- Interactions between molecules
1. Intramolecular forces
a. Ionic
b. Covalent
2. Intermolecular forces
a. Dipole – dipole
i. Hydrogen bonding (H-F, H-O, H-N)
b. London dispersion (in all molecules, bigger is better)
c. Ion-dipole
3. Determining the forces present in a molecule
a. Why are some substances miscible while other immiscible?
i. Like dissolves like
4. Surface tension and viscosity
a. How do these relate to intermolecular forces?
5. Changes in state of matter (melting, freezing, etc.)
6. Vapor pressure
a. How does it relate to intermolecular forces?
b. Dynamic equilibrium
c. Boiling point
i. Pvap > Patm
7. The heating curve
8. Energy of change in state of matter
a. Heat of vaporization
b. Heat of fusion
9. Types of solids and their properties
a. Crystalline versus amorphous
b. Covalent network solids
c. Ionic solids
d. Metallic solids
e. Molecular solids