RT 121 Midterm Study Guide
Questions and Answers 100% PASS
Nucleons are: - CORRECT ANSWER-Protons and neutrons
The atomic number given to an element is: - CORRECT ANSWER-The sum of
the number of protons in the nucleus.
Using the formula 2 x N squared and given that the M shell of the electron orbit
has the number 3 (N). How many electrons will occupy this shell if it is not the
outermost shell? - CORRECT ANSWER-18
If the N shell of an electron orbit is the outermost shell, what is the maximum
number of electrons that you will find in that shell? - CORRECT ANSWER-8
The binding energy that holds an electron in its shell around an atom: -
CORRECT ANSWER-Increases as the shells get closer to the nucleus.
If an atom has16 protons and 16 electrons, how many electrons are orbiting in the
M shell? - CORRECT ANSWER-6
The atomic mass for any element is: - CORRECT ANSWER-Equal to the number
of protons and neutrons in the nucleus of the atom.
,The octet rule states that any atom cannot have more than 8 orbiting shells. -
CORRECT ANSWER-False
Which of the following is not true about isotopes?
Isotopes have the same chemical characteristics as the original atom because they
have the same number of outer shell electrons.
Not all isotopes are naturally occurring.
Some isotopes are unstable and can transform through radioactive decay.
An isotope has the same number of neutrons but a different number of protons. -
CORRECT ANSWER-An isotope has the same number of neutrons but a
different number of protons.
What is the maximum number of electrons that can orbit in the P-shell if the P-
shell is not the outermost shell of that atom? - CORRECT ANSWER-72
X-ray wavelengths are measured in: - CORRECT ANSWER-Angstroms
One kilogram is equal to: - CORRECT ANSWER-1000 cubic centimeters of water
at 0 C.
The current model of the atom that is considered most representative to the
structure of matter is the: - CORRECT ANSWER-Bohr model
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,A proton is roughly _____ times larger than an electron. - CORRECT ANSWER-
1800
What are the atomic particles that carry an electrical charge? - CORRECT
ANSWER-Protons and electrons
When 2 or more atoms are chemically united, they form a/an: - CORRECT
ANSWER-Molecule
Which of the following statements is true about the relationship between
wavelength and frequency of electromagnetic radiation?
As frequency increases, so does the wavelength.
Wavelenght and frequency are directly proportional.
Wavelength and frequency do not have a relationship and do not have an effect
upon each other.
As wavelength increases, frequency decreases. - CORRECT ANSWER-As
wavelength increases, frequency decreases.
The one property that is common with all of the energies found in the
electromagnetic spectrum is: - CORRECT ANSWER-Velocity
Which of the following is not part of the electromagnetic spectrum?
Infrared
Ultraviolet
, Gamma rays
Ultrasound - CORRECT ANSWER-Ultrasound
There are two forces that hold an electron in its orbit around the nucleus. The first
is the attractive electrostatic force that that pulls the electron towards the nucleus
and the other force is _____ that prevents the electron from moving closer to the
nucleus. - CORRECT ANSWER-The centrifugal force
The ______ is the unit of current. - CORRECT ANSWER-The ampere
______ is the force or electrical pressure that produces electron movement and
current flow. - CORRECT ANSWER-Voltage
One ampere is equal to ______. - CORRECT ANSWER-1 coulomb flowing per
second
One kilovolt is equal to 1000 volts. - CORRECT ANSWER-True
Resistance is: - CORRECT ANSWER-Increased when the conductor diameter
gets smaller.
According to ohm's law, the current in a circuit with 120 volts and a resistance of 5
ohms is: - CORRECT ANSWER-24 ampere
What is the resistance of a circuit if the voltage is 24 V and the current is 60
amperes? - CORRECT ANSWER-.4
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Questions and Answers 100% PASS
Nucleons are: - CORRECT ANSWER-Protons and neutrons
The atomic number given to an element is: - CORRECT ANSWER-The sum of
the number of protons in the nucleus.
Using the formula 2 x N squared and given that the M shell of the electron orbit
has the number 3 (N). How many electrons will occupy this shell if it is not the
outermost shell? - CORRECT ANSWER-18
If the N shell of an electron orbit is the outermost shell, what is the maximum
number of electrons that you will find in that shell? - CORRECT ANSWER-8
The binding energy that holds an electron in its shell around an atom: -
CORRECT ANSWER-Increases as the shells get closer to the nucleus.
If an atom has16 protons and 16 electrons, how many electrons are orbiting in the
M shell? - CORRECT ANSWER-6
The atomic mass for any element is: - CORRECT ANSWER-Equal to the number
of protons and neutrons in the nucleus of the atom.
,The octet rule states that any atom cannot have more than 8 orbiting shells. -
CORRECT ANSWER-False
Which of the following is not true about isotopes?
Isotopes have the same chemical characteristics as the original atom because they
have the same number of outer shell electrons.
Not all isotopes are naturally occurring.
Some isotopes are unstable and can transform through radioactive decay.
An isotope has the same number of neutrons but a different number of protons. -
CORRECT ANSWER-An isotope has the same number of neutrons but a
different number of protons.
What is the maximum number of electrons that can orbit in the P-shell if the P-
shell is not the outermost shell of that atom? - CORRECT ANSWER-72
X-ray wavelengths are measured in: - CORRECT ANSWER-Angstroms
One kilogram is equal to: - CORRECT ANSWER-1000 cubic centimeters of water
at 0 C.
The current model of the atom that is considered most representative to the
structure of matter is the: - CORRECT ANSWER-Bohr model
COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED
,A proton is roughly _____ times larger than an electron. - CORRECT ANSWER-
1800
What are the atomic particles that carry an electrical charge? - CORRECT
ANSWER-Protons and electrons
When 2 or more atoms are chemically united, they form a/an: - CORRECT
ANSWER-Molecule
Which of the following statements is true about the relationship between
wavelength and frequency of electromagnetic radiation?
As frequency increases, so does the wavelength.
Wavelenght and frequency are directly proportional.
Wavelength and frequency do not have a relationship and do not have an effect
upon each other.
As wavelength increases, frequency decreases. - CORRECT ANSWER-As
wavelength increases, frequency decreases.
The one property that is common with all of the energies found in the
electromagnetic spectrum is: - CORRECT ANSWER-Velocity
Which of the following is not part of the electromagnetic spectrum?
Infrared
Ultraviolet
, Gamma rays
Ultrasound - CORRECT ANSWER-Ultrasound
There are two forces that hold an electron in its orbit around the nucleus. The first
is the attractive electrostatic force that that pulls the electron towards the nucleus
and the other force is _____ that prevents the electron from moving closer to the
nucleus. - CORRECT ANSWER-The centrifugal force
The ______ is the unit of current. - CORRECT ANSWER-The ampere
______ is the force or electrical pressure that produces electron movement and
current flow. - CORRECT ANSWER-Voltage
One ampere is equal to ______. - CORRECT ANSWER-1 coulomb flowing per
second
One kilovolt is equal to 1000 volts. - CORRECT ANSWER-True
Resistance is: - CORRECT ANSWER-Increased when the conductor diameter
gets smaller.
According to ohm's law, the current in a circuit with 120 volts and a resistance of 5
ohms is: - CORRECT ANSWER-24 ampere
What is the resistance of a circuit if the voltage is 24 V and the current is 60
amperes? - CORRECT ANSWER-.4
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