Atomic Math
Chemistry
9th - 12th Grade
NGSS covered
Used 137+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many protons does nitrogen have?
14.01
14
7
15
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the mass number of an element that has 8 protons and 8 neutrons?
8
0
16
64
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the most common isotope of boron?
boron-5
boron-10
boron-11
boron-13
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many neutrons are in lithium-7?
7
6.94
3
4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many electrons are in helium-4?
2
4
3
0
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In an electrically neutral atom, the number of electrons is equal to the...
atomic number
mass number
average atomic mass
most common isotope
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the mass number of an aluminum isotope that contains 13 neutrons?
13
26
27
26.98
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