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WorksheetsAtoms and Isotopes
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
Which of the following is a subatomic particle with no charge that is found in the nucleus of an atom?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
2.
Which of the following is a negatively charged subatomic particle?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
3.
Where are electrons of an atom found?
a)
Nucleus
b)
Electron Cloud
c)
Some are in the nucleus and some in the electron cloud.
d)
They are moving everywhere.
4.
An atom has an atomic number of 30 and a mass number of 65. How many neutrons are in the atom?
a)
30
b)
65
c)
35
d)
95
5.
An atom has 5 protons and 7 neutrons. What is the mass number of the atom?
a)
5
b)
7
c)
2
d)
12
6.
Which of the following has all of the subatomic particles that make up an atom?
a)
Protons, Nucleus, Electrons
b)
Neutrons, Nucleus, Protons
c)
Electrons, Quarks, Protons
d)
Electrons, Protons, Neutrons
7.
What is in the nucleus of an atom?
a)
Neutrons and protons
b)
Protons
c)
Protons and Electrons
d)
Electrons and Nuetrons
8.
A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is ____.
a)
26
b)
30
c)
52
d)
56
9.
An atom has 10 protons and a mass of 18. It has __ neutrons
a)
10
b)
18
c)
28
d)
8
10.
Atoms of the same element that have different numbers of neutron.
a)
Nucleus
b)
Atom
c)
Ion
d)
Isotope
11.
An atom that is no longer neutral because it has gained or lossed electrons.
a)
Electron
b)
Ions
c)
Protons
d)
Neutrons
12.
The number of protons in an atom of an element.
a)
Atomic Number
b)
Proton
c)
Ion
d)
Electron Cloud
13.
What is the Atomic mass?
a)
Atomic Mass = A
b)
Atomic Mass = B
c)
Atomic Mass = C
d)
Atomic Mass = D
14.
Which is the Element Symbol?
a)
Element Symbol = A
b)
Element Symbol = B
c)
Element Symbol = C
d)
Element Symbol = D
15.
Which is the atomic number?
a)
Atomic Number = A
b)
Atomic Number = B
c)
Atomic Number = C
d)
Atomic Number = D
16.
Protons: 15
Neutrons: 16
Electrons: 15
Neutrons: 16
Electrons: 15
a)
Normal Atom
b)
Isotope
c)
Anion
d)
Cation
17.
Atomic Number: 26
Neutrons: 30
Electrons: 25
Neutrons: 30
Electrons: 25
a)
Normal Atom
b)
Isotope
c)
(-) Ion
d)
(+) Ion
18.
What is the Atomic Mass?
a)
6.941
b)
7
c)
3
d)
6
19.
Atomic Number: 33
Neutrons: 42
Electrons: 36
Neutrons: 42
Electrons: 36
a)
Normal Atom
b)
Isotope
c)
(-) Ion
d)
(+) Ion
20.
Which of the following is a positively charged subatomic particle found in the nucleus of an atom?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
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