Unit 3: Understanding the Atom

Quiz
•
Chemistry
•
5th - 8th Grade
•
Hard
+2
Standards-aligned

Natasha Clemons
Used 24+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which part of the atom makes up most of its volume?
its electron cloud
its neutrons
its nucleus
its protons
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What did Democritus believe an atom was?
a solid, indivisible object
a tiny particle with a nucleus
a nucleus surrounded by an electron cloud
a tiny nucleus with electrons surrounding it
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If an ion contains 10 electrons, 12 protons, and 13 neutrons, what is the ion's charge?
2-
1-
2+
3+
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
J. J Thomson's experimental setup is shown. What is happening to the cathode rays?
They are attracted to the negative plate.
They are attracted to the positive plate.
They are stopped by the plates.
They are unaffected by either plate.
Tags
NGSS.HS-PS2-5
NGSS.HS-PS3-5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many neutrons does iron-59 have?
30
33
56
59
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why were Rutherford's students surprised by the results of the gold foil experiment?
They didn't expect the alpha particles to bounce back from the foil.
They didn't expect the alpha particles to continue in a straight path.
They expected only a few alpha particles to bounce back from the foil.
The expected the alpha particles to be deflected by electrons.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which determines the identity of an element?
its mass number
the charge of the atom
the number of neutrons
the number of protons
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