ACS CHEMISTRY FINAL EXAM 2,
GENERAL CHEMISTRY 2 ACS FINAL
REVIEW, ACS- CHEMISTRY 2
What is the most complete and best description of a covalent bond? - Correct Answers -
A system of two nuclei where each atom donates one electron to the other atom, thus
forming a bond
What is not a characteristic of ionic substances? - Correct Answers -Their reactions are
generally extremely slow.
Characteristics of Ionic Substances - Correct Answers --They conduct an electric
current when fused.
-Those having a common ion exhibit some similar chemical properties.
-They lower the vapor pressure of water when dissolved in it.
-They raise the boiling point of water when dissolved in it.
The addition of a catalyst in a chemical reaction - Correct Answers -Provides an
alternate path with a different activation energy.
What procedure will lower the activation energy for a particular reaction? - Correct
Answers -adding a catalyst
What's an accurate description of the behavior of a catalyst? - Correct Answers -A
catalyst reduces the activation energy for a reaction and increases the rate of a
reaction.
What exactly do Catalysts do? - Correct Answers -Alter the pathway (mechanism) of a
chemical reaction.
Which group of ions can exist together in water solution in moderate concentration? -
Correct Answers -K+, Cl-, Na+, NO3-
In which process is entropy decreases in what process? - Correct Answers -freezing
water
When equal volumes of 0.1 M solutions of HCl and NaOH are mixed, the total number
of ions
, present will be approximately - Correct Answers -Half as great as before
Ion - Correct Answers -An atom or group of atoms that has gained or lost one or more
electrons, thus acquiring a charge.
A species of an element in which the number of electrons does not equal the number of
protons.
Energy of a photon is greatest in case of a - Correct Answers -x-rays.
Photon - Correct Answers -A particle of electromagnetic radiation with no mass that
carries a quantum of energy. A discrete amount.
packet of energy whose quantity is related to the frequency of the electromagnetic
radiation
Regions of the Electromagnetic Spectrum (from highest frequency to lowest inversely
related to wavelength) - Correct Answers -Gamma, X-ray, Ultra-violet, visible light,
Infrared, Microwave, Radio
The higher the frequency, the ______ the photon energies. - Correct Answers -higher
Elements with ____ ionization readily lose electrons to form positive ions.
high/low - Correct Answers -low
Elements with ____ electron affinity ready accept electrons to form negative ions. -
Correct Answers -high
TRUE/FALSE
Do these two match up?
low ionization energy + high electron affinity - Correct Answers -TRUE.
molarity - Correct Answers -moles of solute/Liters of solution; mmols/mL
What is a Polar Molecule? - Correct Answers -A molecule that is mostly positive on one
side and mostly negative on the other.
Hydrogen Bonding - Correct Answers -When hydrogen is attracted to electronegative
atoms.
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.
Formal charge - Correct Answers -V - N - (B/2) where V = total valence e⁻, N = non-
bonding e⁻, and B = bonding e⁻.
GENERAL CHEMISTRY 2 ACS FINAL
REVIEW, ACS- CHEMISTRY 2
What is the most complete and best description of a covalent bond? - Correct Answers -
A system of two nuclei where each atom donates one electron to the other atom, thus
forming a bond
What is not a characteristic of ionic substances? - Correct Answers -Their reactions are
generally extremely slow.
Characteristics of Ionic Substances - Correct Answers --They conduct an electric
current when fused.
-Those having a common ion exhibit some similar chemical properties.
-They lower the vapor pressure of water when dissolved in it.
-They raise the boiling point of water when dissolved in it.
The addition of a catalyst in a chemical reaction - Correct Answers -Provides an
alternate path with a different activation energy.
What procedure will lower the activation energy for a particular reaction? - Correct
Answers -adding a catalyst
What's an accurate description of the behavior of a catalyst? - Correct Answers -A
catalyst reduces the activation energy for a reaction and increases the rate of a
reaction.
What exactly do Catalysts do? - Correct Answers -Alter the pathway (mechanism) of a
chemical reaction.
Which group of ions can exist together in water solution in moderate concentration? -
Correct Answers -K+, Cl-, Na+, NO3-
In which process is entropy decreases in what process? - Correct Answers -freezing
water
When equal volumes of 0.1 M solutions of HCl and NaOH are mixed, the total number
of ions
, present will be approximately - Correct Answers -Half as great as before
Ion - Correct Answers -An atom or group of atoms that has gained or lost one or more
electrons, thus acquiring a charge.
A species of an element in which the number of electrons does not equal the number of
protons.
Energy of a photon is greatest in case of a - Correct Answers -x-rays.
Photon - Correct Answers -A particle of electromagnetic radiation with no mass that
carries a quantum of energy. A discrete amount.
packet of energy whose quantity is related to the frequency of the electromagnetic
radiation
Regions of the Electromagnetic Spectrum (from highest frequency to lowest inversely
related to wavelength) - Correct Answers -Gamma, X-ray, Ultra-violet, visible light,
Infrared, Microwave, Radio
The higher the frequency, the ______ the photon energies. - Correct Answers -higher
Elements with ____ ionization readily lose electrons to form positive ions.
high/low - Correct Answers -low
Elements with ____ electron affinity ready accept electrons to form negative ions. -
Correct Answers -high
TRUE/FALSE
Do these two match up?
low ionization energy + high electron affinity - Correct Answers -TRUE.
molarity - Correct Answers -moles of solute/Liters of solution; mmols/mL
What is a Polar Molecule? - Correct Answers -A molecule that is mostly positive on one
side and mostly negative on the other.
Hydrogen Bonding - Correct Answers -When hydrogen is attracted to electronegative
atoms.
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.
Formal charge - Correct Answers -V - N - (B/2) where V = total valence e⁻, N = non-
bonding e⁻, and B = bonding e⁻.
