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WorksheetsAtoms & Elements
Total questions: 20
Worksheet time: 15mins
Name
Class
Date
1.
Which of the following best describes an atom?
a)
protons and neutrons grouped together
b)
protons and electrons grouped together
c)
a core (center) of protons and neutrons surrounded by electrons
d)
a core of electrons and neutrons surrounded by protons
2.
Which of the following is found farthest from the center of an atom?
a)
nucleus
b)
proton
c)
neutron
d)
electron
3.
Use your periodic table to answer the following question.
Which of the following atoms has 14 electrons?
Which of the following atoms has 14 electrons?
a)
Carbon (C)
b)
Silicon (Si)
c)
Sulfur (S)
d)
Argon (Ar)
4.
Use the picture of an atom below to answer the question.
Which statement best describes the part of the atom that is shown by the letter B?
Which statement best describes the part of the atom that is shown by the letter B?
a)
It is an electron, and it has a negative charge.
b)
It is an electron, and it has a positive charge.
c)
It is a proton, and it has a negative charge.
d)
It is a neutron, and it has a neutral charge.
5.
Cobalt (Co) has 27 protons in each atom. Based on this information, which of the following also describes an atom of Cobalt?
a)
It has no neutrons.
b)
It has 27 electrons.
c)
It has 13 neutrons and 14 electrons.
d)
It has a total of 86 neutrons and electrons.
6.
Manganese has an atomic mass of 55 and an atomic number of 25. What does this information reveal about most phosphorus atoms?
a)
They contain more neutrons than protons.
b)
They contain more protons than neutrons.
c)
They contain the same amount of protons and neutrons.
d)
They contain more electrons than neutrons.
7.
Which of the following identifies the number and location of protons in a Sulfur atom (S)?
a)
32 protons, located in the nucleus
b)
16 protons, located in the nucleus
c)
32 protons, located outside the nucleus
d)
16 protons, located outside the nucleus
8.
Iodine (I) has 53 electrons in each atom. Based on this information, which of the following also describes an atom of silver?
a)
It has 53 neutrons.
b)
It has 53 protons.
c)
It has 27 neutrons and 26 electrons.
d)
It has a total of 180 neutrons and electrons.
9.
An element with an atomic number of 37 and an atomic mass of 85 has how many neutrons in each atom?
a)
37
b)
48
c)
85
d)
122
10.
What makes an atom have a positive charge?
a)
more electrons than protons
b)
more neutrons than electrons
c)
more protons than electrons
d)
less protons than electrons
11.
An atom has 54 protons, 54 electrons, and 131 neutrons. What is the atomic number of the atom?
a)
54
b)
77
c)
131
d)
185
12.
How many protons and neutrons are there in an atom of Gallium (Ga)?
a)
31 protons and 31 neutrons
b)
31 protons and 70 neutrons
c)
31 protons and 39 neutrons
d)
31 protons and 101 neutrons
13.
The protons in an atom’s nucleus have what kind of charge?
a)
positive
b)
negative
c)
neutral
d)
no charge
14.
What kind of charge do neutrons have?
a)
positive
b)
negative
c)
neutral
d)
-3
15.
What is the basic unit of matter (smallest part of an element)?
a)
atoms
b)
elements
c)
protons
d)
compounds
16.
All atoms of an element have the same number of _____________.
a)
neutrons
b)
electrons
c)
protons
d)
atomic mass
17.
The periodic table is arranged in different ways. One way is by ______________.
a)
atomic mass
b)
atomic number
c)
neutrons
d)
whether they share neutrons
18.
Another way the periodic table is arranged is by family. Families are determined based on the _______________ of an element.
a)
characteristics
b)
atomic mass
c)
number of neutrons
d)
name
19.
The periodic table is also arranged by _________________.
a)
atomic mass
b)
names
c)
temperature
d)
metallic character
20.
How do you find the number of neutrons in an atom?
a)
It is also the atomic number
b)
It is also the atomic mass
c)
Add the atomic mass and the atomic number
d)
Subtract the atomic number from the atomic mass
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