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WorksheetsCPC Electron Unit Vocabulary
Total questions: 18
Worksheet time: 13mins
How does the quantum mechanical model of the atom treat electrons?
As particles in fixed orbits
As waves with probabilistic locations
As particles with definite paths
As static charges around the nucleus
Fill in the blanks using the available answer choices. Heisenberg’s uncertainty principle states that it is impossible to know precisely the position and _________ of a particle at a given time.
velocity
mass
force
orbital
The ________ predicts that all moving particles have wave characteristics.
De Broglie equation
Planck's constant
Newton's law
Einstein's theory
Heisenberg's principle
The De Broglie equation relates each particle’s wavelength to its mass, frequency, and the number 6.626 × 1034 J·s, known as ________.
Planck's constant
Newton's law
Einstein's theory
Heisenberg's principle
Electromagnetic radiation is:
A form of wave energy that is all around us.
A type of chemical reaction.
A process of heat transfer through direct contact.
A method of sound propagation.
The shortest distance between equivalent points on a continuous wave; is usually expressed in meters, centimeters, or nanometers.
wavelength
frequency
amplitude
velocity
The number of waves that pass a given point per second.
frequency
amplitude
wavelength
velocity
The height of a wave from the origin to a crest, or from the origin to a trough.
amplitude
frequency
wavelength
velocity
The _______________ includes x-rays, ultraviolet light, visible light, microwaves, and gamma waves.
electromagnetic spectrum
visible spectrum
infrared spectrum
acoustic spectrum
Two of the discoveries that led to the development of the quantum mechanical model of the atom were (a) , which is a set of frequencies of electromagnetic waves given off by atoms of an element, and the (b) , a phenomenon on which photoelectrons are emitted from a metal’s surface when a light of a certain frequency shines on the surface.
ultraviolet catastrophe
blackbody radiation
gamma radiation
What is a quantum?
A small amount of energy
A continuous flow of energy
A type of particle
A unit of time
When an atom absorbs a(n) (a) , which is a particle of electromagnetic radiation with no mass that carries a quantum of energy, it is excited from the (b) state, the lowest allowable energy state of an atom, to an excited state.
ground state
electron
neutron
proton
In Bohr’s model of the atom, he proposed that electrons existed in orbits around the nucleus. Each orbit was assigned a __________________________ to indicate its energy level.
atomic mass
spin
electron configuration
s orbital
quantum number
In the quantum mechanical model of the atom, an electron is said to occupy a three-dimensional region of probability around the nucleus called a(n) (a) . Each of these is assigned a (b) to indicate its relative size and energy.
electron cloud
valence shell
What is the difference between a principal energy level and energy sublevels?
Principal energy levels are divided into sublevels.
Energy sublevels are divided into principal energy levels.
Principal energy levels and sublevels are the same.
Sublevels are higher in energy than principal energy levels.
The way electrons are arranged in the orbitals of an atom is called its __________________.
electron configuration
atomic structure
nuclear arrangement
proton alignment
Which of the following are the three rules that determine the arrangements of electrons in an atom?
Pauli Exclusion Principle, Hund's Rule, Aufbau Principle
Bohr's Model, Rutherford's Model, Quantum Model
Dalton's Atomic Theory, Avogadro's Law, Boyle's Law
Newton's Laws, Kepler's Laws, Ohm's Law
An atom's (a) electrons are found in its (b) orbitals. They are represented in an electron dot diagram, which consists of the element's (c) and the appropriate number of dots.
