CHEM134 Final Exam Questions &
Answers (Grade A+)
instantaneous dipole -
correct answer ✅a temporary change in charge distribution
volatility -
correct answer ✅substance's tendency to vaporize
frequency factor (in the Arrhenius Equation) -
correct answer ✅Number of times the reactants approach the
activation barrier per unit time
elementary step -
correct answer ✅A step within the reaction mechanism, which
cannot be broken down into smaller steps. The molecularity of the
step can be linked to a rate law (i.e. first order, second order, zero
order)
catalyst -
correct answer ✅substance that increases the rate of reaction
without being consumed
,CHEM134 Final Exam Questions &
Answers (Grade A+)
what does the equilibrium constant represent -
correct answer ✅the relationship between products and reactants
of a reaction at equilibrium
amphoteric substances -
correct answer ✅Substances that can react as both acids and
bases, such as H20 and NH3
strong acids -
correct answer ✅HCl, HBr, HNO3, H2SO4, HClO4
weak acids -
correct answer ✅carboxylic acids, acetic acid, hydrofluoric acid
strong bases -
correct answer ✅NaOH, KOH
weak bases -
correct answer ✅NH3, amines (anything with NH2)
, CHEM134 Final Exam Questions &
Answers (Grade A+)
functional group -
correct answer ✅group of atoms within a molecule having
characteristic chemical behavior
alkanes -
correct answer ✅saturated, single bonds
alkenes -
correct answer ✅have unsaturated, double bonds
alkynes -
correct answer ✅have unsaturated, triple bonds
arenes -
correct answer ✅have alternating double/single bonds, often in an
"aromatic ring"
benzene is an example
alcohol -
correct answer ✅carbon atom bonded to oxygen of hydroxyl
group (-OH)
Answers (Grade A+)
instantaneous dipole -
correct answer ✅a temporary change in charge distribution
volatility -
correct answer ✅substance's tendency to vaporize
frequency factor (in the Arrhenius Equation) -
correct answer ✅Number of times the reactants approach the
activation barrier per unit time
elementary step -
correct answer ✅A step within the reaction mechanism, which
cannot be broken down into smaller steps. The molecularity of the
step can be linked to a rate law (i.e. first order, second order, zero
order)
catalyst -
correct answer ✅substance that increases the rate of reaction
without being consumed
,CHEM134 Final Exam Questions &
Answers (Grade A+)
what does the equilibrium constant represent -
correct answer ✅the relationship between products and reactants
of a reaction at equilibrium
amphoteric substances -
correct answer ✅Substances that can react as both acids and
bases, such as H20 and NH3
strong acids -
correct answer ✅HCl, HBr, HNO3, H2SO4, HClO4
weak acids -
correct answer ✅carboxylic acids, acetic acid, hydrofluoric acid
strong bases -
correct answer ✅NaOH, KOH
weak bases -
correct answer ✅NH3, amines (anything with NH2)
, CHEM134 Final Exam Questions &
Answers (Grade A+)
functional group -
correct answer ✅group of atoms within a molecule having
characteristic chemical behavior
alkanes -
correct answer ✅saturated, single bonds
alkenes -
correct answer ✅have unsaturated, double bonds
alkynes -
correct answer ✅have unsaturated, triple bonds
arenes -
correct answer ✅have alternating double/single bonds, often in an
"aromatic ring"
benzene is an example
alcohol -
correct answer ✅carbon atom bonded to oxygen of hydroxyl
group (-OH)
