
Chemistry Pre-AP Review
Authored by Charles Martinez
Science
7th Grade
NGSS covered

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39 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
All elements and matter are composed of extremely small particles called:
Mixtures
Molecules
Atoms
Compounds
Tags
NGSS.MS-PS1-1
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What can you conclude from the fact that scientists continue to update the atomic model?
Scientists did not have any information about atoms until a few years ago
Old information about atoms is useless
Scientists still have no idea what atoms look like
New information about atoms continues to be discovered
Tags
NGSS.HS-PS1-8
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which particles in atoms have a negative electric charge?
electrons
nuclei
neutrons
protons
Tags
NGSS.MS-PS2-3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In an atom, the number of protons equals the number of
neutrons.
nuclei.
electrons.
isotopes.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What holds atoms together in a molecule?
Gravity
chemical bonds
density
physical bonds
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The nucleus of an atom has
neutrons and electrons
protons and neutrons
protons and electrons
all the above
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Using the diagram to identify the letter that shows the proton.
a
b
c
Tags
NGSS.MS-PS1-1
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