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WorksheetsHistory of the Atom and Basic Atomic Structure
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
What Greek philosopher first spoke about the idea of an atom?
a)
Democritus
b)
Dalton
c)
Thompson
d)
Rutherford
2.
The word “atom” comes from the Greek “atomos." What does "atomos" translate to?
a)
Important
b)
Atmosphere
c)
Indivisible
d)
Cuttable
3.
Which is the correct sequence of the scientists who made major changes in the model of the atom?
1-JJ Thomson
2-Erwin Schrodinger
3-John Dalton
4-Niels Bohr
5-Ernest Rutherford
1-JJ Thomson
2-Erwin Schrodinger
3-John Dalton
4-Niels Bohr
5-Ernest Rutherford
a)
2, 1, 4, 3, 5
b)
3, 1, 5, 4, 2
c)
5, 3, 2, 1, 4
d)
4, 3, 2, 1, 5
4.
What contribution did John Dalton make to atomic theory?
a)
He discovered that every atom was positively charged.
b)
He discovered that every element consisted of one type of atom.
c)
He discovered that atoms had nuclei.
d)
He discovered that atoms could be divided into smaller parts.
5.
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
6.
Which scientist discovered the electron?
a)
Bohr
b)
Rutherford
c)
Dalton
d)
Thomson
7.
Which scientist discovered the nucleus?
a)
Bohr
b)
Rutherford
c)
Chadwick
d)
Thomson
8.
Who is the scientist who proposed the "solar system" model of an atom where the electrons orbit around the nucleus?
a)
Democritus
b)
Niels Bohr
c)
Ernest Rutherford
d)
Chadwick
9.
Which scientist described electrons as waves that move in orbitals?
a)
Thomson
b)
Rutherford
c)
Schrodinger
d)
Chadwick
10.
What scientist discovered the neutron?
a)
Chadwick
b)
Schrodinger
c)
Thompson
d)
Rutherford
11.
This model of the atom described atoms as tiny spheres that could not be broken down into smaller pieces.
a)
Dalton's model of the atom
b)
The "Plum Pudding Model" of the atom
c)
The Nuclear Model
d)
The Bohr Model
12.
This model was developed after J.J. Thompson discovered electrons, a particle smaller than an atom. Is shows electrons floating freely in a positive space.
a)
The "Plum Pudding Model" of the atom
b)
The "Rutherford Model" of the atom
c)
Democritus's model of the atom
d)
The "Solar System Model" of the atom
13.
This model described the atom as having a postive center called the nuclues with an empty space where electrons could be found.
a)
The Bohr Model
b)
The Nuclear Model
c)
The Electron Cloud Model
d)
The Quantam Mechanic Model
14.
Which model was developed using the gold foil experiment?
a)
Thomson Model
b)
Rutherford Model
c)
Cloud Model
d)
Bohr Model
15.
What particle of an atom was the last to be discovered in 1932?
a)
Electron
b)
Proton
c)
Neutron
d)
Nucleus
16.
Which of these particles was discovered first? They were originally called corpuscles.
a)
Protons
b)
Electrons
c)
Neutrons
d)
Quarks
17.
According to the Bohr model, how many electrons can the first orbital hold?
a)
8
b)
2
c)
4
d)
6
18.
What is the name of the model of the atom that scientists use today?
a)
Billiard Ball Model
b)
Plum Pudding Model
c)
Quantum Mechanical Model
d)
The Nuclear Model
19.
Who is credited with developing the atomic theory? (Sometimes called the father of atomic theory)
a)
John Dalton
b)
J. J. Thomson
c)
Earnest Rutherford
d)
Niels Bohr
20.
Rutherford’s experiment determined that the nucleus of an atom is tiny, dense and ______ charged.
a)
positively
b)
negatively
c)
neutrally
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