CHM 2210
Review Exam I
CH 1-4
CH 1
- Definition of organic chemistry
- Old
- New
- Structure of atom
- Electrons -
- Protons +
- Neutrons 0
- Nucleus +
- Atomic orbitals
- S
- P
- D
- F
- Electron Configuration
- Elements
- Ions
- Valence and core electrons
- Bonding
- Covalent
- Ionic
- Drawing lewis dot structures
- Including formal charge
- Including resonance structures
- Hybridization of atoms
- Geometry about an atom
- Angles
- Valence bond theory
- Based on overlap of orbitals
- Hybridization
- Molecular orbital theory
- Additive and subtractive combo of orbitals
- Energy diagrams
- Chemical formulas
- Full structural formula
- Condensed
- Skeletal
- Molecular formula
- Empirical formula
CH 2
- Electronegativity
- Bonds
- Polar covalent
- Non-polar covalent
- Ionic
- Dipole moment
- % ionic character
- Intermolecular forces
- Dipole-dipole
- Ion-dipole
- Dispersion
- Hydrogen bonding
- Resonance for lewis structures
- Major
- Minor
- Acids and bases
- Arrhenius
- Definition
- Why did we have to come up with a new definition?
- Bronsted-Lowry
- Definition
- Acid, base, conjugate acid, conjugate base
- Lewis
- Definition
- Nucleophile
- Electrophile
- Dative bonding
- Acid strength
- Strength as Ka as pKa
- For atom (attached to H) in different groups
- Strength as electronegativity
- Bond is more polar, so it dissociates in water easier (remember that water is polar and that like dissolves like)
- For atom (attached to H) in same group
- Strength as size of atom
- Larger size of conjugate ion stabilizes ion therefore reaction proceeds in product direction
- Strength of acid as # of resonance structures of conjugate base
- Stabilizes products therefore reaction proceeds in product direction
CH 3
- Alkanes
- Unreactive
- Hydrophobic
- Insoluble in water
- Less dense than water
- All single bonds
- Saturated compounds (has the max # hydrogens)
- CnH2n+2
- Aliphatic compounds
- Paraffins
- Burn in a flame to produce CO2 , H2O and heat
- Boiling point as # C’s
- Melting point as # C’s
- Boiling point as branching
- Melting point as branching
- Primary, secondary, tertiary, quaternary carbons and hydrogens
- Be able to label
- Naming alkanes
- IUPAC naming
- Straight chains
- Branched alkanes with substituents
- Using common names
- isobutane, isopentane, isohexane, neopentane
- Substituent names – isopropyl, isobutyl, sec-butyl, tert-butyl
- Complex substituents
- Drawing alkanes
- Skeletal structures
- Condensed formulas
- Constitutional isomers
- Conformers
- Torsional strain
- Steric strain
- Ethane
- eclipsed, dihedral angle = 0
- staggered, dihedral angle = 60
- skew, dihedral angle = anything else
- Which is most stable or least stable, why?
- Propane
- Eclipsed, dihedral angle = 0
- staggered, dihedral angle = 60
- skew, dihedral angle = anything else
- Which is most stable or least stable, why?
- Butane
- Totally eclipsed
- Gauche
- Eclipsed
- Anti
- What are the stabilities and associated energies of these conformers with respect to each other, why?
- Functional groups to memorize, matching based on being able to recognize what functional group is present in a structure
- Alkanes
- Alkenes
- Alkynes
- Arenes
- Alcohol
- Carboxylic acid
- Ester
- Ether
- Amide
- Amine
- Ketone
- Aldehyde
CH 4
- Cycloalkanes
- Rings of carbon atoms
- CnH2n
- Nonpolar
- Insoluble in water
- Compact shape compared to regular alkanes
- MP and BP similar to branched alkanes of same # of carbons
- Naming
- Base name
- cyclo
- straight chain
- Substituents added
- Complex substituents
- Common names
- Cis and trans
- Stability
- Cyclopentane and cyclohexane
- All others
- Which most stable, least stable, why?
- strain
- Angle strain
- Torsional strain
- Steric strain
- Cyclohexane
- Chair
- be able to draw and label all positions
- explain stability with respect to boat
- Boat
- be able to draw or recognize
- explain stability with respect to chair
- Axial positions
- Equatorial positions
- Monosubstitued
- Be able to draw the most stable conformation
- Explain why
- Disubstituted
- Be able to draw the most stable conformation
- Explain why
Go through each topic and make sure you understand the topic and how it relates to the other topics. Always ask yourself WHY? We will have time to go through and I will answer questions.
1
Review Exam I