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Isotopes

Total questions: 20

Worksheet time: 12mins

Name
Class
Date
1.
What do these isotopes of carbon all have in common?
a)
neutrons & mass number
b)
atomic number and neutrons
c)
atomic number and electrons
d)
protons, atomic number, and mass number
2.
How many neutrons does the isotope of lithium have?
a)
8
b)
3
c)
4
d)
5
3.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
d)
70
4.
In a correctly written symbol what would be located in the "A" position?
a)
number of neutrons
b)
atomic number
c)
number of electrons 
d)
mass number
5.
What quantities vary between isotopes of an element?
a)
protons, electrons, and atomic mass
b)
protons, electrons, and atomic number
c)
neutrons and electrons
d)
neutrons and atomic mass
6.
which atom has  4 neutrons?
a)
Li-6
b)
Li-7
c)
Li-8
d)
they have the same # of neutrons
7.
How many neutrons does the isotope below have?     89 36Kr
a)
53
b)
36
c)
89
d)
125
8.
An atom is electrically neutral when
a)
protons and neutrons are the same
b)
protons and electrons are the same
c)
neutrons and electrons are the same
d)
neutrons balance the protons and electrons
9.
Ions are: 
a)
atoms with a positive or negative charge
b)
atoms with no charge
c)
atoms with ONLY a positive charge
d)
atoms with ONLY a negative charge
10.
What is the name of the pictured isotope?
a)
Chlorine-Schmorine
b)
Chlorine-17
c)
Chlorine-35
d)
Chlorine-18
11.
What is the name of the pictured isotope?
a)
Copper-29
b)
Copper-63
c)
Copper-34
d)
CopperWopperHopperBopper
12.
What is the name of the pictured isotope?
a)
Carbon-12
b)
Carbon-13
c)
Carbon-14
d)
Carbon-15
13.
How many neutrons does B (Boron) contain?
a)
5
b)
11
c)
6
d)
10.811
14.
Carbon has an atomic number of 6 and an atomic mass of 12. Which elements are considered isotopes of carbon?
a)
Carbon-12
b)
Carbon-13
c)
Carbon-14
d)
Both Carbon-13 and Carbon-14
15.
Adding or subtracting neutrons (charge = 0, mass = 1) makes the element change into an...
a)
ion
b)
mixture
c)
isotope
d)
neutral atom
16.
Which answer choice describes the subatomic particles and their respective charges?
a)
p-    e+    n
b)
p+    e     n-
c)
p+    e-    n
d)
p-     e+    n
17.

What are isotopes?

a)

Atoms of the same elements which have the same number of protons but different number of neutrons.

b)

Atoms of the same elements which have the same number of electron but different number of neutrons.

c)

Atoms of the same elements which have the same proton number but different number of neutrons.

d)

Atoms of the same elements which have the same number of protons but different nucleon numbers.

18.

Choose the ALL CORRECT Information about Element show as diagram.

a)

Proton Number = 40

b)

number of neutrons = 20

c)

Proton Number = 20

d)

Nucleon Number = 20

e)

Nucleon Number = 40

19.

Here are three isotopes of an element.

Bromine-71

Bromine-77

Bromine-82

The numbers 71, 77, 82 are the ____.

a)

electron number

b)

mass number

c)

neutron number

d)

atomic number

20.

Here are three isotopes of an element.

Bromine-71

Bromine-77

Bromine-82

The element name is _____.

a)

Carbon

b)

77

c)

Bromine

d)

Potassium

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