
Atoms and Isotopes Unit Test
Authored by Andrew Smith
Chemistry, Fun
9th - 12th Grade
NGSS covered

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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The atomic number of an isotope represent the number of
protons
protons + neutrons
neutrons
neutrons + electrons
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The number of protons + neutrons in an atomic nucleus is referred to as what?
Atomic number
Isotope number
Mass number
Tags
NGSS.MS-PS1-1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many protons are found in this isotope? 7533As
75
42
33
108
Tags
NGSS.HS-PS1-1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What charge does an atom have when it GAINS electrons?
Positive
Negative
Neutral
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the mass number of this Neon atom?
10
11
21
20
Tags
NGSS.MS-PS1-1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the 1.00794 stand for?
number of neutrons
atomic number
atomic mass
number of protons
Tags
NGSS.MS-PS1-1
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A neutral atom of the isotope 2612Mg would consist of
Tags
NGSS.MS-PS1-1
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