Chem 31
Chabot College
Fall 2015
Dr. Stanton
Final Review Sheet
Quiz 3 will cover all of the topics listed under Chapter 9 and Chapter 10.
Introduction (First Day Lecture and Chapter 3)
Terms: atoms, chemical bonds, molecules, elements, compounds, mixtures
gases, liquids, solids (including pictures at the particulate level)
electrical charges, ions
Scientific Method:
observation, generalization (Law), hypothesis, experiment, theory
Conservation of Mass, Conservation of Energy
nanoscale, macroscale
Chapter 2--Calculations
significant figures
metric system: MEMORIZE nano-, milli-, centi-, kilodimensional analysis
Chapter 4--Nuclear Model of the Atom, Periodic Table
nuclear model of the atom
electrons, protons, neutrons
nuclear symbols; determining number of protons and neutrons
periodic table, groups (families), periods
Chapter 5--Chemical Formulas
ionic charge for groups IA, IIA, IIIA, VIA, VIIA
chemical formulas for ionic compounds
polyatomic ions: MEMORIZE ion formulas and names
NO3-, SO42-, CO32-, PO43-, NH4+, OHcovalent compounds: MEMORIZE formulas and names for CO, CO2, NH3, H2O
seven diatomics MEMORIZE H2, N2, O2, F2, Cl2, Br2, I2
Chapter 6--The Mole
calculate molar mass
percentage composition
converting gmole, moleg, gmolecules etc.
Chapter 7--Chemical Equations
balancing equations
identifying reactants and products for:
acid base neutralization
single replacement
MEMORIZE 4 acids: HCl, HNO3, H2SO4, H3PO4
Chapter 8--Stoichiometry
g mole  mole  g
percent yield
stoichiometry with pictures (drawing before and after reactions)
limiting reagents
thermochemistry (heat)
Chapter 9--Quantum Mechanics
Uncertainty Principle
quantized energy
orbitals (SKETCH 1s, 2px, 2py, 2pz)
Pauli Exclusion Principle
electron configurations for elements #1-#20
Valence Electrons
Chapter 10--Bonding
Ionic bonds, covalent bonds
Lewis Dot structures
single, double and triple bonds (which are longer? which are stronger?)
VSEPR and molecular shape
MEMORIZE shape names (tetrahedral, trigonal pyramid, trigonal planar, linear)
MEMORIZE angles and the shapes they go with: 180o, 120o, 109.5o
Draw pictures of small molecules showing correct shape with wedges
Electronegativity; predict which molecules are polar, which are non-polar
Chapter 11--Gases
Kinetic Theory of Gases--the model
REMEMBER! All gas law problems use temperature in K
Use Boyle's Law & Charles' Law
V(gas) moles  moles  V (gas stoichiometry)
Chapter 13--Solutions
solute and solvent, dilute and concentrated, saturated solutions
M = moles/L
V(solution)  moles moles V (solution stoichiometry)
Appropriate significant figures for various measuring devices

Chem 31 - Chabot College