ACS Gen Chem 1 Exam 2024/2025 Latest
Atomic Mass - correct answers--Can be g/mol, kg/kmol, mg/mmol, etc.
Bent - correct answers--Occurs when one non-bonding pairs and two atoms are
arranged around a central atom. Polar.
Boiling Point - correct answers--The point at which the vapor pressure of a liquid equals
1 atm.
Bomb Calorimeter - correct answers--An insulated container used to study reactions at
a constant volume.
Bond Energy - correct answers--The energy required to break a bond, and the energy
released when a bond is formed.
Calorimeter Constant - correct answers--Amount of energy required to raise the water
surrounding the chamber of the bomb calorimeter by one °C
Combustion of a Hydrocarbon - correct answers--CxHy + (x + y/4)O₂ → xCO₂ + y/2H₂O
Coordinate Covalent Bonding - correct answers--A covalent bond in which the two
electrons derive from the same atom; occurs most often between Lewis acids and
bases.
Electropositive - correct answers--Tending to lose electrons and form positive ions.
Enthalpy - correct answers--change in energy of a system.
Entropy - correct answers--change in chaos of a system.
Expanded Octets - correct answers--Occur in the third row of the periodic table and
beyond in elements that can form stable bonds with more than eight electrons. Eg. XeF₂
Formal charge - correct answers--V - N - (B/2) where V = total valence e⁻, N = non-
bonding e⁻, and B = bonding e⁻.
Free Energy - correct answers--change in spontaneity of a system.
Free Radicals - correct answers--Compounds with an odd number of electrons in their
Lewis Structure. Eg. NO₂
Gibbs Free Energy - correct answers--ΔG = ΔH - TΔS, where ΔH = change in enthalpy
and ΔS = change in entropy.
Atomic Mass - correct answers--Can be g/mol, kg/kmol, mg/mmol, etc.
Bent - correct answers--Occurs when one non-bonding pairs and two atoms are
arranged around a central atom. Polar.
Boiling Point - correct answers--The point at which the vapor pressure of a liquid equals
1 atm.
Bomb Calorimeter - correct answers--An insulated container used to study reactions at
a constant volume.
Bond Energy - correct answers--The energy required to break a bond, and the energy
released when a bond is formed.
Calorimeter Constant - correct answers--Amount of energy required to raise the water
surrounding the chamber of the bomb calorimeter by one °C
Combustion of a Hydrocarbon - correct answers--CxHy + (x + y/4)O₂ → xCO₂ + y/2H₂O
Coordinate Covalent Bonding - correct answers--A covalent bond in which the two
electrons derive from the same atom; occurs most often between Lewis acids and
bases.
Electropositive - correct answers--Tending to lose electrons and form positive ions.
Enthalpy - correct answers--change in energy of a system.
Entropy - correct answers--change in chaos of a system.
Expanded Octets - correct answers--Occur in the third row of the periodic table and
beyond in elements that can form stable bonds with more than eight electrons. Eg. XeF₂
Formal charge - correct answers--V - N - (B/2) where V = total valence e⁻, N = non-
bonding e⁻, and B = bonding e⁻.
Free Energy - correct answers--change in spontaneity of a system.
Free Radicals - correct answers--Compounds with an odd number of electrons in their
Lewis Structure. Eg. NO₂
Gibbs Free Energy - correct answers--ΔG = ΔH - TΔS, where ΔH = change in enthalpy
and ΔS = change in entropy.
