ACS Gen Chem 2 Final Exam Guide 2025: Practice Questions & Answers

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ACS GEN CHEM SECOND SEMESTER EXAM
QUESTIONS AND ANSWERS 2025




Ion - .....ANSWER ...✔✔ A species of an element in
which the number of electrons does not equal the
number of protons.


Isotope - .....ANSWER ...✔✔ Each isotope of an atom
has a different number of neutrons.


Isoelectric - .....ANSWER ...✔✔ Two atoms with the
same charge.


Isotopic - .....ANSWER ...✔✔ Two atoms with the same
number of neutrons.


Transition Metal Orbitals - .....ANSWER ...✔✔ The 4s
orbital is filled before the 3d orbital, but listed after.

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Paramagnetic - .....ANSWER ...✔✔ Atoms that possess
a permanent magnetic charge due to the presence of
unpaired electrons.


Electropositive - .....ANSWER ...✔✔ Tending to lose
electrons and form positive ions.


Tetrahedral Bond Angle - .....ANSWER ...✔✔ 109.5°


Resonance Structures - .....ANSWER ...✔✔ Two
equally correct arrangements of one molecule's
electrons; generally the molecule exists as an average
of the two.


Polar Molecule - .....ANSWER ...✔✔ A molecule that is
mostly positive on one side and mostly negative on the
other.


sp³ Orbital - .....ANSWER ...✔✔ An orbital composed
of one s orbital and three p orbitals; can hold eight total
electrons. Tetrahedral.