CLEP Chemistry Practice Test 1
UPDATED Study Guide QUESTIONS
AND CORRECT ANSWERS
Electronegativity trend (p. 21) - CORRECT ANSWERS Moving from
left to right across a period, electronegativity INCREASES. Moving down a
group from top to bottom, electronegativity DECREASES.
Principal Quantum Number: "n" (p. 19) - CORRECT ANSWERS
Represents the shell an electron occupies, denotes the energy level or size
of an orbital. Is the coefficient number in an electron configuration e.g. for
3p^2, n=3
Angular Momentum Quantum Number: "l" (p. 19) - CORRECT ANSWERS
Represents the subshell the electron occupies, shape of the orbital. s-
orbital: l=0. p-orbital: l=1. d-orbital: l=2. f-orbital: l=3
Magnetic Quantum Number: "m<sub>l" (p. 19) - CORRECT ANSWERS
Represents the orbital position and orientation. s-orbital: ml=0. p-orbital:
ml=-1 (aligned along the x-axis), 0 (z-axis), or +1 (y-axis). d-orbital: ml=-2,-
1,0,+1,+2. f-orbital: ml=-3,-2,-1,0,+1,+2, +3
Spin Quantum Number: "m<sub>s" or "s" (p. 19) - CORRECT ANSWERS
Represents the spin direction of each electron in each orbital. Positive
spin is (+1/2) and negative spin is (-1/2)
Sigma Bond (p. 22) - CORRECT ANSWERS The first covalent bond
between two non-metals
Pi Bond (p. 22) - CORRECT ANSWERS Any additional covalent bonds
between non-metals
, Le Chatelier's principle (p. 83) - CORRECT ANSWERS When a system
at equilibrium is disturbed by a change in pressure, temperature, or
concentration, the reaction will shift to minimize the change and establish a new
equilibrium
Aldehyde - CORRECT ANSWERS An organic molecule containing the -
CHO functional group
Ester (p. 123) - CORRECT ANSWERS An organic molecule containing
the -COO-C functional group
Graham's law of Effusion (p. 39) - CORRECT ANSWERS Gas
molecules of SMALLER molar mass move FASTER than gas molecules of
larger molar mass, mathematically: ra^2/rb^2 = Mb/Ma
Molar mass (p. 17) - CORRECT ANSWERS The mass of one mole of a
given compound in grams or g/mol. Is the larger number that exists in the
periodic table
Network covalent crystals (p. 23) - CORRECT ANSWERS Groups of
non-metal atoms held together by covalent bonds (e.g. Carbon)
Covalent bonds (p. 23) - CORRECT ANSWERS Chemical bond in
which atoms share electrons; caused by the overlap of orbitals
Lewis acid-base reactions (p. 116) - CORRECT ANSWERS A reaction
in which the acid accepts an electron pair from and combines with a weak base
Precipitation reactions (p. 58) - CORRECT ANSWERS Reactions that
occur when soluble reactants are mixed together to form an insoluble product
UPDATED Study Guide QUESTIONS
AND CORRECT ANSWERS
Electronegativity trend (p. 21) - CORRECT ANSWERS Moving from
left to right across a period, electronegativity INCREASES. Moving down a
group from top to bottom, electronegativity DECREASES.
Principal Quantum Number: "n" (p. 19) - CORRECT ANSWERS
Represents the shell an electron occupies, denotes the energy level or size
of an orbital. Is the coefficient number in an electron configuration e.g. for
3p^2, n=3
Angular Momentum Quantum Number: "l" (p. 19) - CORRECT ANSWERS
Represents the subshell the electron occupies, shape of the orbital. s-
orbital: l=0. p-orbital: l=1. d-orbital: l=2. f-orbital: l=3
Magnetic Quantum Number: "m<sub>l" (p. 19) - CORRECT ANSWERS
Represents the orbital position and orientation. s-orbital: ml=0. p-orbital:
ml=-1 (aligned along the x-axis), 0 (z-axis), or +1 (y-axis). d-orbital: ml=-2,-
1,0,+1,+2. f-orbital: ml=-3,-2,-1,0,+1,+2, +3
Spin Quantum Number: "m<sub>s" or "s" (p. 19) - CORRECT ANSWERS
Represents the spin direction of each electron in each orbital. Positive
spin is (+1/2) and negative spin is (-1/2)
Sigma Bond (p. 22) - CORRECT ANSWERS The first covalent bond
between two non-metals
Pi Bond (p. 22) - CORRECT ANSWERS Any additional covalent bonds
between non-metals
, Le Chatelier's principle (p. 83) - CORRECT ANSWERS When a system
at equilibrium is disturbed by a change in pressure, temperature, or
concentration, the reaction will shift to minimize the change and establish a new
equilibrium
Aldehyde - CORRECT ANSWERS An organic molecule containing the -
CHO functional group
Ester (p. 123) - CORRECT ANSWERS An organic molecule containing
the -COO-C functional group
Graham's law of Effusion (p. 39) - CORRECT ANSWERS Gas
molecules of SMALLER molar mass move FASTER than gas molecules of
larger molar mass, mathematically: ra^2/rb^2 = Mb/Ma
Molar mass (p. 17) - CORRECT ANSWERS The mass of one mole of a
given compound in grams or g/mol. Is the larger number that exists in the
periodic table
Network covalent crystals (p. 23) - CORRECT ANSWERS Groups of
non-metal atoms held together by covalent bonds (e.g. Carbon)
Covalent bonds (p. 23) - CORRECT ANSWERS Chemical bond in
which atoms share electrons; caused by the overlap of orbitals
Lewis acid-base reactions (p. 116) - CORRECT ANSWERS A reaction
in which the acid accepts an electron pair from and combines with a weak base
Precipitation reactions (p. 58) - CORRECT ANSWERS Reactions that
occur when soluble reactants are mixed together to form an insoluble product
