WorksheetsAP Chem 1.2 Quiz 2026
Total questions: 14
Worksheet time: 52mins
Name
Class
Date
1.
An unknown element X has the following isotopes: ⁵²X (86.50% abundant), ⁴⁹X (8.00% abundant), ⁵⁰X (5.50% abundant). What is the average atomic mass in amu of X? What is the identity of element X?
4 lines
2.
Which element does this mass spectrum most likely represent?
a)
neon
b)
scandium
c)
boron
d)
sodium
3.
What do the heights of the peaks represent in the mass spectrum?
a)
number of isotopes
b)
relative abundance of each isotope
c)
average atomic mass
d)
charge:mass ratio
4.
How many isotopes are shown in this mass spectrum?
a)
1
b)
84
c)
86
d)
4
5.
What do you expect the molar mass to be for this element?
a)
91.4 g/mol
b)
90.0 g/mol
c)
4 g/mol
d)
50. g/mol
6.
How many isotopes of this element are shown in the mass spectrum?
a)
98
b)
7
c)
100
d)
95.9 g/mol
7.
Based on the mass spectrum, which isotope of chlorine is most abundant?
a)
35Cl
b)
37Cl
c)
70Cl
d)
72Cl
8.
Use your periodic table. There are two isotopes of rubidium: 85Rb and 87 Rb. Which is more abundant?
a)
equally abundant
b)
rubidium-85
c)
rubidium-85.47
d)
rubidium-87
9.
Carbon has three known isotopes. Which is the most abundant?
a)
carbon-12.011
b)
carbon-12
c)
carbon-13
d)
carbon-14
10.
What is the average atomic mass for this element?
a)
10 amu
b)
10.8 amu
c)
19.9 amu
d)
11 amu
11.
Named after Marie and Pierre Curie, the co-discoverers of radioactivity.
a)
helium
b)
curium
12.
Named fo the Latin word fluere, "to flow".
a)
nitrogen
b)
fluorine
13.
I was thinking to tell a Sodium and Hydrogen pun, but .......
a)
YEP
b)
NaH
14.
What type of bear is soluble in water?
a)
a panda bear
b)
a polar bear
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