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Isotope Notation Worksheet - NSHS Science
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Isotope Notation Worksheet - NSHS Science
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Uranium-235 and uranium-238 are considered isotopes of one another. How are uranium-. 235 similar, and how are they different? 2. Define isotope: 3.
Chemistry Worksheet
NAME: _____________________________
Isotope Notation
Block: _________
1. Uranium-235 and uranium-238 are considered isotopes of one another. How are uranium235 similar, and how are they different?
2. Define isotope:
3. The number of protons in an atom is known as the atom. 4. The number of
of that
determines the name of the atom.
5. The mass number of an atom is the number of number of
plus the
in the nucleus of the atom.
6. The isotope notation for nitrogen-15 is as follows: a. The number 15 is the
number.
b. The number 7 is the
number.
c. How many neutrons does nitrogen-15 have? 7. Write the following in isotope notation: a. zinc-66:
_________
d. helium-4:
b.chlorine-35:
_________
c. plutonium-239: _________
_________
g. silver-108:
_________
e. uranium-235: _________
h. thorium-234:
_________
f. potassium-40: _________
i. oxygen-16:
_________
j. the atom with 12 protons and 12 neutrons
____________
k.the atom with 6 protons and 7 neutrons
____________
l. the atom with 79 protons and 117 neutrons.
____________
m. the phosphorus atom that has 17 neutrons.
____________
n.the copper atom that has 34 neutrons.
____________
o.the iodine atom that has 72 neutrons
____________
Copyright © 2012 by the Newton South High School Science Department, Newton, MA.
Page1 of 2
Chemistry Worksheet
NAME: _____________________________
Isotope Notation Block: _________ Complete the table. Recall that A = mass number, Z = atomic number, and ions have charge!
Name
Atom or ion?
Atomic Number
Mass Number
# of n°
# of p+
# of e−
Atom Atom Atom Atom Atom
131 25
53 30
50 85
125 119
Copyright © 2012 by the Newton South High School Science Department, Newton, MA.
36 86
69
242 Atom
38
94 80
89
56
Page2 of 2
Metal, nonmetal, or metalloid?
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