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WorksheetsAtomic Theory and Atoms
Total questions: 20
Worksheet time: 11mins
Name
Class
Date
1.
What does "atomos" mean?
a)
easily divided
b)
unable to be divided
c)
really small
d)
sometimes divided
2.
Who was the first person to publish a theory about the existence of atoms?
a)
John Dalton
b)
JJ Thomson
c)
Earnest Rutherford
d)
Erwin Schrodinger
3.
Which of the following are parts of Dalton's theory?
a)
All substances are made of atoms.
b)
Atoms Join with other atoms to make new substances.
c)
Atoms of different elements are different
d)
All of these are part of his theory
4.
Which scientist is credited with discovering the electron?
a)
John Dalton
b)
JJ Thomson
c)
Ernest Rutherford
d)
Werner Heisenberg
5.
What was the name of the model pictured behind this question?
a)
Oatmeal Model
b)
Rutherford Model
c)
Bohr Model
d)
Plumb Pudding Model
6.
What did Ernest Rutherford discover when he shot particles at gold foil?
a)
Electrons
b)
Protons
c)
Neutrons
d)
A tiny, dense, positively charged nucleus
7.
What two particles are part of the nucleus of an atom?
a)
Protons and Electrons
b)
Electrons and Neutrons
c)
Protons and Neutrons
d)
Alpha and Beta
8.
What particle resides in the nucleus and has no charge?
a)
Proton
b)
Neutron
c)
Electron
d)
Crouton
9.
Who came up with the model in which electrons orbit the nucleus in specific levels?
a)
JJ Thomson
b)
Earnest Rutherford
c)
Niels Bohr
d)
Erwin Schrodinger
10.
How did Rutherford describe the nucleus?
a)
Tiny
b)
Dense
c)
Positively Charged
d)
all of the above
11.
In the current atomic theory, where are electrons likely to be found?
a)
Specific Orbits, like planets around a star
b)
In the nucleus
c)
In the electron cloud
d)
electrons are not part of the current atomic theory
12.
What force is responsible for nucleus not flying apart?
a)
Gravity
b)
Strong Force
c)
Weak Force
d)
Magnetic Force
13.
When you add the number of protons and neutrons together, you are calculating...
a)
Atomic Number
b)
Atomic Mass
c)
Mass Number
d)
Pythagorean's Theorem
14.
The average mass of all naturally occurring isotope is also known as ...
a)
Atomic Number
b)
Atomic Mass
c)
Mass Number
d)
Radioactivity
15.
The number of protons in the nucleus of an atom is the ____________ ____________.
a)
Atomic Number
b)
Atomic Mass
c)
Mass Number
d)
12
16.
Who was the first person to describe matter as "atoms"?
a)
Democritus
b)
Dalton
c)
Thomson
d)
Rutherford
17.
What particle resides in the nucleus and has a positive charge?
a)
Proton
b)
Neutron
c)
Electron
d)
Isotope
18.
What is an element that has a different number of neutrons called?
a)
ion
b)
isotope
c)
carbon
d)
radioactive
19.
What is an atom that has an unstable nucleus referred to as?
a)
radioactive
b)
isotope
c)
ion
d)
Bill
20.
What is a charged atom that has a different amount of protons and electrons called?
a)
ion
b)
isotope
c)
radioactive
d)
Frank
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