CHEM 210 CERTIFICATION EVALUATION
COMPLETE QUESTIONS AND SOLUTIONS
GRADED APLUS
●● stereoisomers
Answer: same molecular formula, same arrangement (connections) of
atoms, but different 3D geometry and different compounds
●● pericyclic
Answer: bonds are broken and formed simultaneously
●● radical
Answer: bonds are broken and formed by single e- movement
●● polar
Answer: bonds are broken and formed by e- pair movement
●● rearrangement
Answer: a single reactant undergoes reorganization of bonds and atoms
to form an isomeric product
●● elimination
, Answer: a single reactant splits into 2 products (often with the formation
of a small molecule like H2O or HBr)
●● addition
Answer: 2 reactants add together to form a single product with no atoms
leftover
●● substitution
Answer: 2 reactants exchange parts to give 2 new products
●● homolytic bond cleavage
Answer: symmetrical bond-breaking; movement of 1 e- to one atom and
another e- to a different atom (radical)
●● heterolytic bond cleavage
Answer: asymmetrical bond-breaking; e- pair movement to one atom
(polar)
●● C-H bond length
Answer: 1.09 A
●● C-H BDE
Answer: 111 kcal/mol
COMPLETE QUESTIONS AND SOLUTIONS
GRADED APLUS
●● stereoisomers
Answer: same molecular formula, same arrangement (connections) of
atoms, but different 3D geometry and different compounds
●● pericyclic
Answer: bonds are broken and formed simultaneously
●● radical
Answer: bonds are broken and formed by single e- movement
●● polar
Answer: bonds are broken and formed by e- pair movement
●● rearrangement
Answer: a single reactant undergoes reorganization of bonds and atoms
to form an isomeric product
●● elimination
, Answer: a single reactant splits into 2 products (often with the formation
of a small molecule like H2O or HBr)
●● addition
Answer: 2 reactants add together to form a single product with no atoms
leftover
●● substitution
Answer: 2 reactants exchange parts to give 2 new products
●● homolytic bond cleavage
Answer: symmetrical bond-breaking; movement of 1 e- to one atom and
another e- to a different atom (radical)
●● heterolytic bond cleavage
Answer: asymmetrical bond-breaking; e- pair movement to one atom
(polar)
●● C-H bond length
Answer: 1.09 A
●● C-H BDE
Answer: 111 kcal/mol