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LRA 211 (FINAL REVIEW) Questions and
Correct Answers
3 fundamental particles of an atom Ans: proton, neutron,
electron
The atomic nucleus contains Ans: protons and neutrons
Component of the nucleus that has a positive charge Ans: proton
Component of the nucleus that has mass but no electrical charge
is the Ans: Neutron
If an atom has more electrons than protons it will have a Ans:
Negative charge
When an atom becomes negatively or positively charged it is
usually due to a change in Ans: Number of electrons
A negative ion is an atom with more Ans: electrons than protons
A positive ion is an atom with more Ans: protons than electrons
if a particle strikes a nucleus with the same amount of energy as
the atoms nuclear binding energy it can Ans: split the atom
the electrons stay in orbit around the nucleus because of Ans:
their attraction to protons
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The electron binding energy is stronger when Ans: there are more
protons and the electron is closer to the nucleus
the electron shell closest to the nucleus is called the Ans: "k" shell
electromagnetic radiation has no ___________. Ans: mass
what kind of disturbance does electromagnetic radiation "NOT"
cause Ans: mechanical
______________ is NOT a form of electromagnetic radiation Ans:
sound
wavelength is ... Ans: the distance from the peak of one wave to
the next
As frequency increases, wavelength Ans: decreases
Wavelength is measured in _______ ? Ans: meters
frequency is measured in _________ ? Ans: hertz
removal of an electron from an atom creates an ion and the
process is called ? Ans: ionization
______________ are produced when fast moving __________ strike
metal Ans: x-rays, electrons
© 2025 All rights reserved
LRA 211 (FINAL REVIEW) Questions and
Correct Answers
3 fundamental particles of an atom Ans: proton, neutron,
electron
The atomic nucleus contains Ans: protons and neutrons
Component of the nucleus that has a positive charge Ans: proton
Component of the nucleus that has mass but no electrical charge
is the Ans: Neutron
If an atom has more electrons than protons it will have a Ans:
Negative charge
When an atom becomes negatively or positively charged it is
usually due to a change in Ans: Number of electrons
A negative ion is an atom with more Ans: electrons than protons
A positive ion is an atom with more Ans: protons than electrons
if a particle strikes a nucleus with the same amount of energy as
the atoms nuclear binding energy it can Ans: split the atom
the electrons stay in orbit around the nucleus because of Ans:
their attraction to protons
© 2025 All rights reserved
, 2 | Page
The electron binding energy is stronger when Ans: there are more
protons and the electron is closer to the nucleus
the electron shell closest to the nucleus is called the Ans: "k" shell
electromagnetic radiation has no ___________. Ans: mass
what kind of disturbance does electromagnetic radiation "NOT"
cause Ans: mechanical
______________ is NOT a form of electromagnetic radiation Ans:
sound
wavelength is ... Ans: the distance from the peak of one wave to
the next
As frequency increases, wavelength Ans: decreases
Wavelength is measured in _______ ? Ans: meters
frequency is measured in _________ ? Ans: hertz
removal of an electron from an atom creates an ion and the
process is called ? Ans: ionization
______________ are produced when fast moving __________ strike
metal Ans: x-rays, electrons
© 2025 All rights reserved
