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WorksheetsAtomic Theory Review
Total questions: 90
Worksheet time: 2hrs 30mins
Who composed a six-part atomic theory based on the ideas of Democritus?
Rutherford
Thomson
Dalton
Aristotle
Who discovered the nucleus by conducting the gold foil experiment?
Rutherford
Dalton
Thomson
Chadwick
Who found the charge and mass of an electron by conducting the oil-drop experiment?
Aristotle
Millikan
Thomson
Rutherford
Who thought that all matter was composed of four elements - earth, fire, water, and air?
Dalton
Democritus
Aristotle
Millikan
Who proposed the plum pudding model of the atom?
Thomson
Rutherford
Dalton
Moseley
Who discovered that each element has a different number of protons?
Dalton
Rutherford
Moseley
Millikan
Who first thought that all matter was composed of small particles called atomos?
Dalton
Democritus
Aristotle
Thomson
Who discovered the neutron?
Chadwick
Moseley
Millikan
Rutherford
Who discovered the electron when working with cathode ray tubes?
Dalton
Moseley
Rutherford
Thomson
Who discovered the proton?
Rutherford
Thomson
Chadwick
Moseley
Who derived an equation that showed how electrons travel around the nucleus as waves?
Schrodinger
de Broglie
Einstein
Heisenberg
Who proposed that it’s impossible to determine the velocity and position of an electron at the same time?
Heisenberg
de Broglie
Einstein
Schrodinger
Who proposed that electrons have wave-like behavior?
Schrodinger
de Broglie
Planck
Heisenberg
Who proposed that electrons orbit the nucleus in circular paths, like planets orbit the Sun?
Schrodinger
Einstein
Planck
Bohr
Who proposed that light has a dual nature and stated that light can be thought of as a beam of photons?
de Broglie
Einstein
Planck
Schrodinger
Who proposed that matter can gain or lose energy only in small, specific amounts called quanta?
Planck
Einstein
de Broglie
Bohr
What is the charge of a proton?
Positive
Negative
Neutral
Unknown
What is the charge of a neutron?
Positive
Negative
Neutral
Unknown
What is the charge of an electron?
Positive
Negative
Neutral
Unknown
Where are protons located?
Inside the nucleus
Outside the nucleus
Inside and outside the nucleus
Unknown
Where are neutrons located?
Inside the nucleus
Outside the nucleus
Inside and outside the nucleus
Unknown
Where are electrons located?
Inside the nucleus
Outside the nucleus
Inside and outside the nucleus
Unknown
What is an atom with a charge called?
(a)
What is an atom with a positive charge called?
(a)
How does a cation form?
An atom loses electrons
An atom loses protons
An atom gains electrons
An atom gains protons
How does an anion form?
An atom loses electrons
An atom loses protons
An atom gains electrons
An atom gains protons
What are atoms of the same element with different numbers of neutrons called?
(a)
What is the number of protons in an atom called?
(a)
What is the number of protons and neutrons in an atom called?
(a)
How many protons does an atom of calcium-48 have?
(a)
How many neutrons does an atom of calcium-48 have?
(a)
How many electrons does an atom of calcium-48 have?
(a)
How many electrons does an atom of calcium-48 have?
(a)
In a nuclear symbol, what is the number on top?
Atomic number
Mass number
Atomic mass
Number of electrons
In a nuclear symbol, what is the number on bottom?
Atomic number
Mass number
Atomic mass
Number of electrons
In hyphen notation, what is the number?
Atomic number
Mass number
Atomic mass
Number of neutrons
If an element's mass number is 20 and it has 9 protons, how many neutrons does it have?
(a)
How many electrons does O2- have?
(a)
What is the charge of a potassium atom that has 18 electrons?
(a)
What is the charge of a nitrogen atom that has 10 electrons?
(a)
What is the name of the model shown in the picture?
Plum pudding model
Nuclear model
Planetary model
Quantum mechanical model
What is the charge of the nucleus?
Positive
Negative
Neutral
Unknown
What is a massless particle that carries a quantum of energy?
(a)
Any energy state higher than the ground state is a(n) (a) state.
Parts of an atom that are smaller than the atom itself are (a) particles.
What is the height of a wave from the origin to the crest or trough?
(a)
The lowest possible energy state of an atom is called its (a) state.
What is the minimum amount of energy that can be lost or gained by matter?
(a)
What is the number of waves that passes a given point in one second?
(a)
What is the shortest distance between equivalent points on a continuous wave?
(a)
What is the smallest particle of an element that retains the properties of the element?
(a)
What is the smallest particle of an element that retains the properties of the element?
(a)
Wavelength and frequency are __________ proportional.
Directly
Inversely
Not
Frequency and energy are __________ proportional.
Directly
Inversely
Not
Wavelength and energy are __________ proportional.
Directly
Inversely
Not
As wavelength increases, frequency __________.
Increases
Decreases
Doesn't change
As frequency increases, energy __________.
Increases
Decreases
Doesn't change
As wavelength increases, energy __________.
Increases
Decreases
Doesn't change
In the quantum mechanical model, what happens to the size of orbitals as n increases?
Orbitals become larger
Orbitals become smaller
Orbitals don't change in size
In the quantum mechanical model, what happens to the energy of orbitals as n increases?
Orbitals' energy increases
Orbitals' energy decreases
Orbitals' energy doesn't change
In the quantum mechanical model, what happens to the distance of electrons from the nucleus as n increases?
Electrons are further from the nucleus
Electrons are closer to the nucleus
Electrons' distance from the nucleus doesn't change
How many orbitals are in the 4th energy level?
(a)
How many electrons can be contained in the 5th energy level?
(a)
How many sublevels are in the 3rd energy level?
(a)
How many electrons can be contained in a 3d orbital?
(a)
How many orbitals are in the 4f sublevel?
(a)
How many sublevels are in the 6th energy level?
(a)
How many electrons can be contained in the 5d sublevel?
(a)
How many d orbitals are in the 1st energy level?
(a)
How many electrons can be contained in the 2nd energy level?
(a)
How many orbitals are in the 4s sublevel?
(a)
How many orbitals are in the 6th energy level?
(a)
How many electrons can be contained in a 1s orbital?
(a)
How many sublevels are in the 1st energy level?
(a)
How many electrons can be contained in the 4p sublevel?
(a)
How many orbitals are in the 7p sublevel?
(a)
How many electrons can be contained in the 7th energy level?
(a)
How many sublevels are in the 5th energy level?
(a)
How many electrons can be contained in the 5f sublevel?
(a)
How many electrons can be contained in the 5f sublevel?
(a)
Which principle or rule states that a maximum of two electrons can occupy a single atomic orbital, but only if the electrons have opposite signs?
The Aufbau principle
The Pauli exclusion principle
Hund's rule
Which principle or rule states that each electron in an atom occupies the lowest energy orbital available?
The Aufbau principle
The Pauli exclusion principle
Hund's rule
Which principle or rule states that single electrons with the same spin must occupy each equal-energy orbital before additional electrons with opposite spins can occupy the same orbital?
The Aufbau principle
The Pauli exclusion principle
Hund's rule
Which principle or rule does the orbital notation in this image violate?
The Aufbau principle
The Pauli exclusion principle
Hund's rule
Which principle or rule does the orbital notation in this image violate?
The Aufbau principle
The Pauli exclusion principle
Hund's rule
Which principle or rule does the orbital notation in this image violate?
The Aufbau principle
The Pauli exclusion principle
Hund's rule
Electrons in the outermost orbitals, or highest energy level, of an atom are called (a) electrons.
How many valence electrons does an atom with the following electron configuration have?
1s22s22p63s23p64s23d9
(a)
How many valence electrons does an atom with the following electron configuration have?
1s22s22p63s23p64s23d104p65s24d105p3
(a)
How many valence electrons does an atom with the following electron configuration have?
1s22s22p4
(a)
