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Atomic Theory Quiz

Total questions: 117

Worksheet time: 1hrs 23mins

Name
Class
Date
1.

What is the scientific theory that matter is composed of particles called?

a)

Molecules

b)

Atoms

c)

Neutrons

d)

Protons

2.

What is the ancient Greek word for 'uncuttable' from which the term 'atom' is derived?

a)

Atommus

b)

Atomos

c)

Atoomos

d)

Atommis

3.

Who noticed that chemical elements seemed to combine with each other by discrete units of weight?

a)

Dmitrii Mendeleev

b)

Antoine Lavoisier

c)

Joseph Proust

d)

John Dalton

4.

What is the law that states that the total mass in a chemical reaction remains constant?

a)

Law of Multiple Proportions

b)

Law of Definite Proportions

c)

Law of Conservation of Mass

d)

Avogadro's Law

e)

Sod's Law

5.

Who proposed that equal volumes of any two gases, at equal temperature and pressure, contain equal numbers of molecules?

a)

John Dalton

b)

Antoine Lavoisier

c)

Amedeo Avogadro

d)

Dmitrii Mendeleev

6.

What did Amedeo Avogadro call 'elementary molecules'?

a)

Compounds

b)

Atoms

c)

Molecules

d)

Particles

7.

What was the term introduced by Jöns Jacob Berzelius to describe substances with the same chemical content but different properties?

a)

Compounds

b)

Isotopes

c)

Elements

d)

Isomers

8.

Who noticed the periodicity of elements when arranged in a row according to their atomic weights?

a)

Antoine Lavoisier

b)

Joseph Proust

c)

Dmitrii Mendeleev

d)

John Dalton

9.

What did Dmitrii Mendeleev predict the existence and properties of based on the periodicity of elements?

a)

New Elements

b)

Isotopes

c)

Molecules

d)

Atoms

10.

What did Jacobus Henricus van 't Hoff propose the carbon atom bonds to other atoms in?

a)

Linear arrangement

b)

Planar arrangement

c)

Octahedral arrangement

d)

Tetrahedral arrangement

11.

What was the term used by J. J. Berzelius to refer to particles containing three or more elements?

a)

Elementary atoms

b)

Compound atoms

c)

Inorganic atoms

d)

Organic atoms

12.

What did Louis Pasteur hypothesize about the molecules of isomers?

a)

They have different sets of atoms

b)

They have the same set of atoms in different arrangements

c)

They have the same number of atoms in different arrangements

d)

They have different numbers of atoms

13.

What did Avogadro's hypothesis provide a method for deducing?

a)

The relative weights of the molecules of gaseous elements

b)

The density of the molecules of gaseous elements

c)

The absolute weights of the molecules of gaseous elements

d)

The volume of the molecules of gaseous elements

14.

What did Dalton mistakenly believe was the simplest compound between any two elements?

a)

One atom of each element

b)

Three atoms of each element

c)

Four atoms of each element

d)

Two atoms of each element

15.

What did Dalton use to measure the atomic weights of various elements?

a)

The volume of the atoms

b)

The absolute weights of the atoms

c)

The density of the atoms

d)

The mass ratios in which they combined

16.

What is the law that states that the properties of elements are periodic functions of their atomic numbers?

a)

Law of Definite Proportions

b)

Law of Conservation of Mass

c)

Avogadro's Law

d)

Periodic Law

17.

Who proposed the concept of atomic number to classify elements?

a)

John Dalton

b)

Antoine Lavoisier

c)

Henry Moseley

d)

Dmitrii Mendeleev

18.

What did Niels Bohr propose about the structure of an atom?

a)

Atoms are indivisible

b)

Electrons move in fixed orbits around the nucleus

c)

Atoms are made up of protons, neutrons and electrons

d)

Atoms combine in simple whole number ratios to form compounds

19.

Who proposed the theory that atoms of the same element are identical, but differ from those of any one of the other elements?

a)

John Dalton

b)

Antoine Lavoisier

c)

Joseph Proust

d)

Dmitrii Mendeleev

20.

What is the law that states that when two elements combine to form more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers?

a)

Law of Definite Proportions

b)

Law of Conservation of Mass

c)

Law of Multiple Proportions

d)

Avogadro's Law

21.

Who proposed the theory that atoms are indivisible and indestructible particles?

a)

John Dalton

b)

Antoine Lavoisier

c)

Joseph Proust

d)

Dmitrii Mendeleev

22.

What did J.J. Thomson discover that led to the development of the 'plum pudding' model of the atom?

a)

Protons

b)

Neutrons

c)

Electrons

d)

Isotopes

23.

What is the law that states that the same chemical compound always contains its component elements in a fixed ratio and does not depend on its source and method of preparation?

a)

Law of Definite Proportions

b)

Law of Conservation of Mass

c)

Law of Multiple Proportions

d)

Avogadro's Law

24.

Who proposed the theory that atoms of different elements can combine in simple whole number ratios to form chemical compounds?

a)

John Dalton

b)

Antoine Lavoisier

c)

Joseph Proust

d)

Dmitrii Mendeleev

25.

What did Niels Bohr propose about the structure of an atom?

a)

Atoms are indivisible

b)

Electrons move in fixed orbits around the nucleus

c)

Atoms are made up of protons, neutrons and electrons

d)

Atoms combine in simple whole number ratios to form compounds

26.

What did Jacobus Henricus van 't Hoff propose the carbon atom bonds to other atoms in?

a)

Linear arrangement

b)

Planar arrangement

c)

Octahedral arrangement

d)

Tetrahedral arrangement

27.

What is the term for the smallest particle of a chemical element that can exist?

a)

Atom

b)

Molecule

c)

Compound

d)

Element

28.

What is the law that states that matter cannot be created or destroyed, only rearranged?

a)

Law of Definite Proportions

b)

Law of Conservation of Mass

c)

Law of Multiple Proportions

d)

Avogadro's Law

29.

Who proposed the theory that atoms are made up of protons, neutrons, and electrons?

a)

John Dalton

b)

Antoine Lavoisier

c)

Ernest Rutherford

d)

Dmitrii Mendeleev

30.

What is the term for 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?

a)

Atomic number

b)

Atomic weight

c)

Atomic mass

d)

Atomic volume

31.

Who proposed the theory that the properties of elements are periodic functions of their atomic numbers?

a)

John Dalton

b)

Henry Moseley

c)

Joseph Proust

d)

Dmitrii Mendeleev

32.

What did Ernest Rutherford propose about the structure of an atom?

a)

Atoms are indivisible

b)

Electrons move in fixed orbits around the nucleus

c)

Atoms are made up of protons, neutrons and electrons

d)

Atoms have a dense central nucleus

33.

What is the law that states that equal volumes of gases, at the same temperature and pressure, have the same number of molecules?

a)

Law of Definite Proportions

b)

Avogadro's Law

c)

Law of Multiple Proportions

d)

Law of Conservation of Mass

34.

Who proposed the 'plum pudding' model of the atom?

a)

John Dalton

b)

J.J. Thomson

c)

Ernest Rutherford

d)

Niels Bohr

35.

What is the term for a pure substance consisting of two or more different types of atoms bonded together?

a)

Element

b)

Compound

c)

Isotope

d)

Molecule

36.

Who is known for the discovery of the neutron?

a)

Ernest Rutherford

b)

James Chadwick

c)

Niels Bohr

d)

J.J. Thomson

37.

What scientist is best known for his "Plum Pudding" model of the atom?

a)

J.J. Tomson

b)

Ernest Rutherford

c)

John Dalton

d)

Democritus

38.

What does the nucleus of an atom contain?

a)

Electrons and neutrons

b)

Protons and neutrons

c)

Neutrinos and positrons

d)

DNA and RN

39.

Who came up with this model of an atom?

a)

J.J. Thompson

b)

Ernest Rutherford

c)

Neils Bohr

d)

James Chadwick

40.

Rutherford concluded that the atom

a)

has a nucleus with a positive charge

b)

has a nucleus with a negative charge 

c)

is a small mass with negative and positive charges

d)

contains a nucleus without a charge

41.

Which of the following scientist discovered the current model of the atom?

a)

Dalton

b)

Schrodinger.

c)

Thomson

d)

Dalton

42.

What is the difference between the Electron Cloud Model and the Bohr Model

a)

placement of the electrons

b)

placement of the neutrons

c)

placement of protons

d)

Bohr model did not include a nucleus

43.

Discoverer of the neutron?

a)

Jimmy

b)

Chadwick

c)

Charleston

d)

Rutherford

44.

Atoms are made up of three basic parts, which are -

a)

Protons, neutrons, electrons

b)

neutrinos, protons, neutrons

c)

quarks, protons, electrons

d)

electrons, neutrons, and quarks

45.

Discovered the electron

a)

J J thomson

b)

Dalton

c)

Chadwick

d)

Rutherford

46.

Discovered the electron

a)

J J thomson

b)

Dalton

c)

Chadwick

d)

Rutherford

47.

Uncertainty principle A particle’s position, energy, and time can never be precisely known

a)

Heisenberg

b)

Chadwick

c)

Bohr

d)

J J thomson

48.

Created a model of the atom with electrons moving around the nucleus in fixed orbits

a)

Bohr

b)

Dalton

c)

Heisenberg

d)

J J thomson

49.

Discovered the neutron

a)

Chadwick

b)

Bohr

c)

J J thomson

d)

Dalton

50.

Did the gold foil experiment

a)

Rutherford

b)

Dalton

c)

Democritus

d)

Heisenberg

51.
Discovered that the atom is mostly empty space
a)
Rutherford
b)
Dalton
c)
Democritus
d)
J J Thomson
52.
Created the atomic theory
a)
Dalton
b)
J J thomson
c)
Schrodinger
d)
Democritus
53.
Used the cathode ray tube in his discovery
a)
J J thompson
b)
Dalton
c)
Chadwick
d)
Democritus
54.
Created the “plum pudding” model of the atom
a)
J J Thompson
b)
Chadwick
c)
Dalton
d)
Democritus
55.
Greek Philosopher
a)
Democritus
b)
Dalton
c)
J J Thompson
d)
Rutherford
56.
Believed that the universe was made of tiny “un-cuttable” particles
a)
Democritus
b)
Dalton
c)
J J Thompson
d)
Heisenberg
57.
Worked with the Quantum Theory
a)
Dalton
b)
J.J thompson
c)
Heisenberg
d)
Democritus
58.
Found the missing mass of the atom’s nucleus
a)
Heisenberg
b)
Chadwick
c)
JJ Thomson
d)
Dalton
59.
He showed, through math, that waves can be used to describe electrons in atoms.
a)
Schrodinger
b)
Chadwick
c)
JJ Thomson
d)
Dalton
60.

Ancient civilizations believed that all matter was made up of 4 basic “elements”, which were defined as:

a)

air, fire, earth, water

b)

carbon, hydrogen, oxygen, nitrogen

c)

hydrogen, oxygen, water, air

d)

earth, wind, fire, steel

61.

Most historical records consider _________________________ as the Father of Modern Chemistry.

a)

Isaac Newton

b)

John Dalton

c)

Antoine Lavosier

d)

Albert Einstein

62.

One of the early errors that many alchemists made was the idea that certain common materials and elements could be combined through fire and heat to produce ________. This idea was known as transmutation.

a)

silver

b)

energy

c)

water

d)

gold

63.

Who was the Greek philosopher who first suggested that matter was composed of indivisible particles which he referred to as atomos?

a)

Dalton

b)

Democritus

c)

Einstein

d)

Plato

64.

The first universally accepted theory on atoms was proposed in 1803 by what English school teacher?

a)

Winston Churchill

b)

John Dalton

c)

James Bond

d)

J J Thomson

65.

Matter is conserved in a chemical reaction, where the mass of the atoms contained in the reactants before the reaction will be equal to the mass of the atoms formed in the products after the reaction is completed. This important discovery credited to Lavoisier is known as:

a)

The Law of Conservation of Matter

b)

The Law of Definite Composition

c)

The Third Law of Thermodynamics

d)

The Law of Ecological Balance

66.

J.J. Thomson discovered the presence of the first subatomic particle, which was called the:

a)

atom

b)

proton

c)

electron

d)

nucleus

67.

Through the Gold Foil Experiment, Rutherford showed the existence of what important atomic structure?

a)

the electron cloud

b)

the nucleus

c)

the alpha particle

d)

the neutron

68.

Which two subatomic particles can be found in the nucleus of an atom?

a)

ribosomes and endoplasmic reticulum

b)

neutrons and protons

c)

electrons and protons

d)

protons and alpha particles

69.

Ernest Rutherford used _______ to discover the existence of the nucleus in an atom.

a)

a microscope

b)

alpha particles

c)

a spectrophotometer

d)

a cathode ray tube

70.

In the Planetary Model of the atom, Niels Bohr stated that the electrons were located in:

a)

the nucleus

b)

pulsars

c)

energy shells

d)

the atom

71.

Atoms of the same element with different numbers of neutrons.

a)

Formula Unit

b)

Isotopes

c)

Isomers

d)

Protons

72.

How many neutrons are there in an atom of Lithium-7?

a)

4

b)

3

c)

7

d)

10

73.

What is the name for the total number of protons in the nucleus of an atom?

a)

Atomic Number

b)

Mass Number

c)

Isotope Number

d)

Average Atomic Mass

74.

What is the name for the total of all of the protons and neutrons in the nucleus of an atom?

a)

Atomic Number

b)

Isotope Number

c)

Mass Number

d)

Average Atomic Mass

75.

How many protons are in an atom of Calcium?

a)

40

b)

40.08

c)

20

d)

There are no protons in calcium

76.

How many electrons are there in an atom of Sodium-23

a)

11

b)

12

c)

23

d)

34

77.

What is the mass number of Copper-63?

a)

29

b)

63

c)

34

d)

92

78.

Which of the following is a reason why Rutherford concluded that the nucleus is positive?

a)

Most of the alpha particles missed the nucleus

b)

Most of the alpha particles hit the nucleus

c)

The alpha particles bounced off of the nucleus

d)

The alpha particles stuck to the nucleus

79.

How many neutrons are in an atom of Gold - 195?

a)

79

b)

116

c)

195

d)

274

80.

Which of the following is the "standard" when determining the relative mass of an element?

a)

Carbon-12

b)

Carbon-14

c)

Oxygen-16

d)

Hydrogen-1

81.

What is the name for a positive ion?

a)

Cation

b)

Anion

c)

Electron

d)

Polyatomic Ion

82.

Which of the following is a metal?

a)

Calcium

b)

Hydrogen

c)

Nitrogen

d)

Carbon

83.

Which of the following is the alkaline earth metal in period 2?

a)

Beryllium

b)

Magnesium

c)

Barium

d)

Strontium

84.

Which of the following has 50 protons in the nucleus?

a)

Calcium

b)

Gold

c)

Tin

d)

Lead

85.

Which of the following represents our modern day model of the atom?

a)

b)

c)

d)

86.

Which of the following is NOT included in our modern day model of the atom?

a)

Protons and Neutrons in the center

b)

Electrons orbit in energy levels like planets around the sun

c)

The atom is mostly empty space.

d)

Electrons can be found in orbitals outside the nucleus

87.

Which of the following scientists was the first to consider atoms made up matter?

a)

Democritus

b)

Aristotle

c)

Dalton

d)

Chadwick

88.

Which of the following models is considered the Plum Pudding Model?

a)

b)

c)

d)

89.

Which experiment listed below did Thomson use to discover electrons?

a)

Cathode Ray Tube

b)

Oil Drop Experiment

c)

Cat Experiment

d)

Gold Foil Experiment

90.

What is the name of our modern day model of the atom?

a)

Plum Pudding Model

b)

Electron Orbit Model

c)

Pool Ball Model

d)

Quantum Mechanical Model

91.
This particle is found in the nucleus and has no charge
a)
Neutron
b)
Proton
c)
Electron
d)
Orbital
92.
This particle is found in the nucleus and has a positive charge
a)
Electron
b)
Proton
c)
Neutron
d)
Neutral
93.
This is a negatively charged particle found outside the nucleus
a)
Electron
b)
Proton
c)
Neutron
d)
Orbital
94.
Which of the following is proposed by Erwin Schrodinger?
a)
Solar system model of the atom
b)
Plum pudding model of the atom
c)
Billiard ball model of the atom
d)
Electron cloud model of the atom
95.

What is the atomic number of Be?

a)

2

b)

4

c)

6

d)

8

96.

What is the atomic number of fluorine?

a)

4

b)

5

c)

7

d)

9

97.
A mixture that is so evenly mixed you can't see the parts.  Such as Kool-Aid
a)
Homogeneous Mixture
b)
Heterogeneous Mixture
c)
Pure Substance
98.

A student determines the density of an irregularly shaped block of lead in the laboratory. The displacement volume measured 20.73 mL using a graduated cylinder. The mass on the electric balance reads 385.624 g. What is the density of lead reporting to the appropriate number of significant figures allotted by the equipment used?

a)

18 g/mL

b)

18.6 g/mL

c)

18.60 g/mL

d)

18.6022 g/mL

99.

In a famous experiment conducted by Ernest Rutherford, positively charged alpha particles were scattered by a thin gold foil. Which of the following is a conclusion that resulted from this experiment?

a)

The nucleus is negatively charged

b)

The atom is a dense solid and is indivisible

c)

The mass is conserved when atoms react chemically

d)

The nucleus is very small and the atom is mostly empty space

100.

What did Werner Heisenberg's uncertainty principle state?

a)

Atoms are uniformly packed spheres of positive matter filled with negatively charged electrons.

b)

Atoms consist largely of empty space with just a few electrons.

c)

Electrons orbit the nucleus at fixed energies and distances.

d)

Electrons cannot be pinpointed but exist within a range of possible locations.

101.

What does the current quantum model of the atom propose?

a)

Atoms are uniformly packed spheres of positive matter filled with negatively charged electrons.

b)

Atoms consist largely of empty space with just a few electrons.

c)

Electrons orbit the nucleus at fixed energies and distances.

d)

Electrons cannot be pinpointed but exist within a range of possible locations.

102.

What is the modern description of electrons in atoms called?

a)

Bohr model

b)

Quantum mechanical model

c)

Shell model

d)

Atomic orbital model

103.

What is the region of space where there is a high probability of finding an electron called?

a)

Atomic shell

b)

Atomic cloud

c)

Atomic orbital

d)

Atomic subshell

104.
Who would have said this?
"I said that all matter was made from Earth, Wind, Fire, and Water."
a)
J.J. Thomson
b)
Dalton
c)
Aristotle
d)
Democritus
105.

Stated that electrons move randomly in the electron cloud

a)

Democritus

b)

Rutherford

c)

Chadwick

d)

Planck

106.

What is NOT a postulate of Dalton

a)

Atoms look like small round balls

b)

Atoms combine to form molecules or compounds

c)

All atoms look the same on the periodic table

d)

Atoms are indivisible

107.

Order the atomic models below from the oldest to the most recent.

a)

2, 1, 3, and 4

b)

1, 2, 4, and 3

c)

3, 2, 4, and 1

d)

3, 1, 2, and 4

108.
Ernst Rutherford discovered which part of the atom through the use of gold foil?
a)
Proton
b)
Neutron
c)
Electron
d)
Orbitals
109.
All matter is made of what?
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
110.
An atom's overall charge is ________.
a)
positive 
b)
depends
c)
neutral 
d)
negative 
111.
What is the amu of a neutron?
a)
almost zero
b)
1
c)
2
112.
The weighted average of the masses of all naturally occurring isotopes of an element is
a)
Atomic number
b)
Atomic Mass
c)
Atomic weight
d)
Protons
113.
What is the amu of an electron
a)
Almost zero
b)
1
c)
2
d)
3
114.
If two atoms have the same atomic number but different numbers of neutrons, they are
a)
Ions of that element
b)
Different elements
c)
Isotopes of the same atom
d)
Isotopes of different elements
115.
The atomic number for Oxygen is 8, so
a)
there are 8 protons in the atom
b)
the atomic mass is less than 8
c)
the mass of the atom is 8
d)
the atom is decaying
116.
How did each model of the atom help to develop the atomic theory? 
a)
Each model provided opinions that were added.
b)
Each model showed different properties of the same structure. 
c)
Each model showed new particles that had been discovered.
d)
Each model built upon the other to show new particles or properties of previously discovered particles. 
117.
The nucleus of an atom can be described as:
a)
spacious and negatively charged
b)
dense and positively charged
c)
spacious and positively charged
d)
dense and negatively charged

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