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WorksheetsAtomic Structure
Total questions: 20
Worksheet time: 14mins
Name
Class
Date
1.
Subatomic particles with a negative charge
a)
Electrons
b)
Neutrons
c)
Protons
d)
Quarks
2.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
3.
Value representing the number of protons in an element
a)
Atomic Mass
b)
Mass Number
c)
Valence Electrons
d)
Atomic Number
4.
Subatomic particles that are neutral in charge
a)
Neutrons
b)
Protons
c)
Nucleus
d)
Electrons
5.
A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass
a)
Electron Shells
b)
Orbitals
c)
Electron Cloud
d)
Nucleus
6.
True or False - Protons and Neutrons have about the same mass.
a)
True - They have about the same mass
b)
False - They do not have about the same mass
7.
Which two subatomic particles make up the nucleus of an atom?
a)
Protons and Electrons
b)
Neutrons and Electrons
c)
Electrons and Protons
d)
Protons and Neutrons
8.
How many neutrons does this atom have?
a)
4
b)
5
c)
6
d)
7
9.
In this picture, the Electrons are found in which color?
a)
Blue
b)
Red
c)
Green
10.
How can we see atoms?
a)
With our eyes
b)
With a telescope
c)
With a microscope
11.
How many electrons does this picture show?
a)
4
b)
5
c)
6
d)
3
12.
How many electron shells/levels does this atom have?
a)
1
b)
2
c)
3
d)
4
13.
Which parts of the atom move around the nucleus?
a)
electrons
b)
protons
c)
electrode particles
d)
neutrons
14.
In an atom, the number of protons is equal to the number of ____________.
a)
energy levels
b)
neutrons
c)
neurons
d)
electrons
15.
The center of an atom is called the ________________.
a)
electron cloud
b)
nucleus
c)
neutrion
d)
nuetron
16.
Which of the following is correct?
a)
Protons are positive, electrons are negative, neutrons are neutral.
b)
Protons are neutral, electrons are negative, neutrons are positive
c)
Protons are negative, electrons are positive, neutrons are neutral
d)
Protons are positive, electrons are neutral, neutrons are negative
17.
What is true about an atom?
a)
Most of the space in an atom is taken up by the nucleus
b)
Atoms are mostly empty space
c)
Atoms have no mass
d)
Electrons have much more mass that protons or neutrons.
18.
The term "neutral" means
a)
having only a little bit of charge
b)
having a positive charge
c)
having a negative charge
d)
having no charge at all
19.
The mass of this particle is so small that it is not counted.
a)
proton
b)
electron
c)
neutron
d)
quark
20.
These will determine what element an atom is.
a)
number of neutrons
b)
number of electrons
c)
number of atoms
d)
number of protons
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