Chem 121 Final Exam Questions With 100% Correct
Answers
Absorption of Energy - ANSWER-Absorption is the process by which
atoms, molecules, or ions enter a bulk phase (liquid, gas, solid).
Absorption differs from from adsorption, since the
atoms/molecules/ions are taken up by the volume, not by surface.
.Another wavelength chart - ANSWER-
.Artificial Transmutation - ANSWER-An artificially induced nuclear
reaction caused by the bombardment of a nucleus with subatomic
particiles or small nucei.
The conversion of one element into another by artificial means, i.e.,
by means of bombarding with some fundamental particles, is known
as artificial transmutation. The phenomenon was first applied on
nitrogen whose nucleus was bombarded with a-particles to produce
oxygen.
.Atomic Mass - ANSWER-the mass of an atom of a chemical element
expressed in atomic mass units. It is approximately equivalent to the
number of protons and neutrons in the atom (the mass number) or to
,the average number allowing for the relative abundances of different
isotopes.
.Atomic Number - ANSWER-the number of protons in the nucleus of
an atom, which determines the chemical properties of an element and
its place in the periodic table.
.Atomic Radius Trend - ANSWER-
.Aufbau Principle - ANSWER-states that, hypothetically, electrons
orbiting one or more atoms fill the lowest available energy levels
before filling higher levels (e.g., 1s before 2s). In this way, the
electrons of an atom, molecule, or ion harmonize into the most stable
electron configuration possible.
.Barometer - ANSWER--atmospheric pressure
Barometers are used in determining height above sea level and in
forecasting the weather. The two primary types of barometers are the
aneroid and the mercury barometer.
.Bond length - ANSWER-The less bonds, the longer the bond length.
Single bonds are the longest.
, .Bond Strength - ANSWER-More bonds, greater strength.
.Bonded pairs - ANSWER-Pair of electrons involved in a covalent bond.
.Combination - ANSWER-reaction where two or more elements or
compounds (reactants) combine to form a single compound (product).
Such reactions may be represented by equations of the following
form: X + Y → XY.
.Combustion - ANSWER-or burning is a high-temperature exothermic
redox chemical reaction between a fuel and an oxidant, usually
atmospheric oxygen, that produces oxidized, often gaseous products,
in a mixture termed as smoke.
A combustion reaction is a reaction that occurs when a substance
reacts with oxygen, releasing energy in the form of heat and light.
.Continuous Spectrum - ANSWER-A spectrum that includes some, but
not all of the wavelengths in the specified range. In the visible
spectrum there are gaps or missing colors. pure white light. A
continuous spectrum of all possible wavelengths of light.
.Conversions - ANSWER-
Answers
Absorption of Energy - ANSWER-Absorption is the process by which
atoms, molecules, or ions enter a bulk phase (liquid, gas, solid).
Absorption differs from from adsorption, since the
atoms/molecules/ions are taken up by the volume, not by surface.
.Another wavelength chart - ANSWER-
.Artificial Transmutation - ANSWER-An artificially induced nuclear
reaction caused by the bombardment of a nucleus with subatomic
particiles or small nucei.
The conversion of one element into another by artificial means, i.e.,
by means of bombarding with some fundamental particles, is known
as artificial transmutation. The phenomenon was first applied on
nitrogen whose nucleus was bombarded with a-particles to produce
oxygen.
.Atomic Mass - ANSWER-the mass of an atom of a chemical element
expressed in atomic mass units. It is approximately equivalent to the
number of protons and neutrons in the atom (the mass number) or to
,the average number allowing for the relative abundances of different
isotopes.
.Atomic Number - ANSWER-the number of protons in the nucleus of
an atom, which determines the chemical properties of an element and
its place in the periodic table.
.Atomic Radius Trend - ANSWER-
.Aufbau Principle - ANSWER-states that, hypothetically, electrons
orbiting one or more atoms fill the lowest available energy levels
before filling higher levels (e.g., 1s before 2s). In this way, the
electrons of an atom, molecule, or ion harmonize into the most stable
electron configuration possible.
.Barometer - ANSWER--atmospheric pressure
Barometers are used in determining height above sea level and in
forecasting the weather. The two primary types of barometers are the
aneroid and the mercury barometer.
.Bond length - ANSWER-The less bonds, the longer the bond length.
Single bonds are the longest.
, .Bond Strength - ANSWER-More bonds, greater strength.
.Bonded pairs - ANSWER-Pair of electrons involved in a covalent bond.
.Combination - ANSWER-reaction where two or more elements or
compounds (reactants) combine to form a single compound (product).
Such reactions may be represented by equations of the following
form: X + Y → XY.
.Combustion - ANSWER-or burning is a high-temperature exothermic
redox chemical reaction between a fuel and an oxidant, usually
atmospheric oxygen, that produces oxidized, often gaseous products,
in a mixture termed as smoke.
A combustion reaction is a reaction that occurs when a substance
reacts with oxygen, releasing energy in the form of heat and light.
.Continuous Spectrum - ANSWER-A spectrum that includes some, but
not all of the wavelengths in the specified range. In the visible
spectrum there are gaps or missing colors. pure white light. A
continuous spectrum of all possible wavelengths of light.
.Conversions - ANSWER-
