ACS Chemistry Final Exam 2, Questions
and Answers 2026 Update
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.
,ACS Chemistry Final Exam 2, Questions
and Answers 2026 Update
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.
, ACS Chemistry Final Exam 2, Questions
and Answers 2026 Update
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?
and Answers 2026 Update
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.
,ACS Chemistry Final Exam 2, Questions
and Answers 2026 Update
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.
, ACS Chemistry Final Exam 2, Questions
and Answers 2026 Update
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?
