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WorksheetsIsotope EQ Review
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
True or False: For a neutral (uncharged) atom, the number of electrons is equal to the number of protons.
a)
True
b)
False
2.
Which of the following is NOT a way to symbolize an isotope?
a)
Element-mass number (ex. Helium-4)
b)
Symbol-atomic number (ex. He-2)
c)
Symbol-mass number (ex.He-4)
3.
True or False: There are 86 electrons in an (uncharged) atom of Sr-86
a)
True
b)
False
4.
In the isotope B-11, what does the 11 represent?
a)
Atomic Number
b)
Mass Number
c)
Average atomic mass
5.
Which isotope has a mass number of 14 and 8 neutrons?
a)
N-14
b)
O-18
c)
C-14
6.
An unknown isotope contains 15 protons, 15 electrons, and 17 neutrons. What is the identity of this unknown isotope?
a)
P-15
b)
P-17
c)
P-32
7.
A neutral atom of Cl-37 has ______.
a)
37 protons, 37 neutrons, and 37 electrons.
b)
17 protons, 37 neutrons, and 17 electrons.
c)
17 protons, 20 neutrons, and 17 electrons.
8.
Isotopes of the same elements must have the same number of _______.
a)
Protons only
b)
Protons and electrons
c)
Neutrons only
9.
Isotopes of the same element must have different numbers of _______.
a)
Protons
b)
Neutrons
c)
Electrons
10.
How many neutrons are in an atom of Sr-86?
a)
48
b)
58
c)
86
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