ACS GEN CHEM 1 EXAM LATEST UPDATE QUESTIONS
WITH CORRECT ANSWERS
Ion - CORRECT ANSWERSA species of an element in which the number of electrons does not
equal the number of protons.
Isotope - CORRECT ANSWERSEach isotope of an atom has a different number of neutrons.
Isoelectric - CORRECT ANSWERSTwo atoms with the same charge.
Isotopic - CORRECT ANSWERSTwo atoms with the same number of neutrons.
Transition Metal Orbitals - CORRECT ANSWERSThe 4s orbital is filled before the 3d orbital, but
listed after.
Paramagnetic - CORRECT ANSWERSAtoms that possess a permanent magnetic charge due to the
presence of unpaired electrons.
Electropositive - CORRECT ANSWERSTending to lose electrons and form positive ions.
Tetrahedral Bond Angle - CORRECT ANSWERS109.5°
Resonance Structures - CORRECT ANSWERSTwo equally correct arrangements of one molecule's
electrons; generally the molecule exists as an average of the two.
Polar Molecule - CORRECT ANSWERSA molecule that is mostly positive on one side and mostly
negative on the other.
, sp³ Orbital - CORRECT ANSWERSAn orbital composed of one s orbital and three p orbitals; can
hold eight total electrons. Tetrahedral.
Trigonal Planar - CORRECT ANSWERSThe way that three objects will arrange themselves around
a central atom. Non-polar.
Free Radicals - CORRECT ANSWERSCompounds with an odd number of electrons in their Lewis
Structure. Eg. NO₂
Incomplete Octets - CORRECT ANSWERSOccur in elements that can form stable bonds with less
than eight electrons. Eg. BF₃
Expanded Octets - CORRECT ANSWERSOccur in the third row of the periodic table and beyond
in elements that can form stable bonds with more than eight electrons. Eg. XeF₂
Hydrogen Bonding - CORRECT ANSWERSWhen hydrogen is attracted to electronegative atoms.
Sigma Bonding - CORRECT ANSWERSFormed by head-on overlapping between orbitals.
Coordinate Covalent Bonding - CORRECT ANSWERSA covalent bond in which the two electrons
derive from the same atom; occurs most often between Lewis acids and bases.
Hybridization - CORRECT ANSWERSMathematical procedure in which the standard atomic
orbitals combine to form new orbitals.
sp² Orbital - CORRECT ANSWERSComposed of one s orbital and two p orbitals; can hold six total
electrons. Trigonal planar.
WITH CORRECT ANSWERS
Ion - CORRECT ANSWERSA species of an element in which the number of electrons does not
equal the number of protons.
Isotope - CORRECT ANSWERSEach isotope of an atom has a different number of neutrons.
Isoelectric - CORRECT ANSWERSTwo atoms with the same charge.
Isotopic - CORRECT ANSWERSTwo atoms with the same number of neutrons.
Transition Metal Orbitals - CORRECT ANSWERSThe 4s orbital is filled before the 3d orbital, but
listed after.
Paramagnetic - CORRECT ANSWERSAtoms that possess a permanent magnetic charge due to the
presence of unpaired electrons.
Electropositive - CORRECT ANSWERSTending to lose electrons and form positive ions.
Tetrahedral Bond Angle - CORRECT ANSWERS109.5°
Resonance Structures - CORRECT ANSWERSTwo equally correct arrangements of one molecule's
electrons; generally the molecule exists as an average of the two.
Polar Molecule - CORRECT ANSWERSA molecule that is mostly positive on one side and mostly
negative on the other.
, sp³ Orbital - CORRECT ANSWERSAn orbital composed of one s orbital and three p orbitals; can
hold eight total electrons. Tetrahedral.
Trigonal Planar - CORRECT ANSWERSThe way that three objects will arrange themselves around
a central atom. Non-polar.
Free Radicals - CORRECT ANSWERSCompounds with an odd number of electrons in their Lewis
Structure. Eg. NO₂
Incomplete Octets - CORRECT ANSWERSOccur in elements that can form stable bonds with less
than eight electrons. Eg. BF₃
Expanded Octets - CORRECT ANSWERSOccur in the third row of the periodic table and beyond
in elements that can form stable bonds with more than eight electrons. Eg. XeF₂
Hydrogen Bonding - CORRECT ANSWERSWhen hydrogen is attracted to electronegative atoms.
Sigma Bonding - CORRECT ANSWERSFormed by head-on overlapping between orbitals.
Coordinate Covalent Bonding - CORRECT ANSWERSA covalent bond in which the two electrons
derive from the same atom; occurs most often between Lewis acids and bases.
Hybridization - CORRECT ANSWERSMathematical procedure in which the standard atomic
orbitals combine to form new orbitals.
sp² Orbital - CORRECT ANSWERSComposed of one s orbital and two p orbitals; can hold six total
electrons. Trigonal planar.
