
Average Atomic Mass HW FCHS Chemistry I
Authored by Carolynne Hagan
Science, Chemistry
10th - 12th Grade
NGSS covered
Used 9+ times

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17 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The atomic mass of an element is the ___.
average of the mass number and the atomic number for the element
weighted average of the masses of the isotopes of the element
total mass of the isotopes of the element
total number of subatomic particles in the nucleus
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The box for an element from the periodic table is shown. Which is the atomic mass?
A
B
C
D
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In order for two elements to be isotopes, what has to be the SAME?
Protons
Electrons
Neutrons
Mass
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In order for two elements to be isotopes, what must be DIFFERENT?
Protons
Electrons
Neutrons
Neutrons & Mass
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If X is the symbol for an element, which of the following two symbols represent isotopes of the same element?
1) 7735X
2) 7733X
3) 8137X
4) 8135 X
1 and 2
3 and 4
1 and 4
1 and 3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lithium has two isotopes. Li-6 and Li-7. Which is more abundant?
Li-6
Li-7
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following could have 82 neutrons?
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