Atomic Structure Review #1
Authored by Jesse Simpson
Chemistry
9th - 12th Grade
NGSS covered
Used 46+ times
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28 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
The common isotopes of hydrogen have masses of 1 amu, 2amu, and 3 amu. The average atomic mass of hydrogen is 1.00794 amu. This shows that the most common isotope has a mass of
1 amu
2 amu
3 amu
4 amu
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A new element, unbiennium, has been synthesized. A typical sample contains 22.50 percent Ube–323 and 77.50 percent Ube–325. What is the average mass?
324.6 amu
323.4 amu
324.0 amu
325.2 amu
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the electron configuration of a sulfur atom in the ground state?
2–4
2–6
2–8–4
2–8–6
Tags
NGSS.HS-PS1-1
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A neutral atom always has an equal number of
neutrons and electrons
neutrons and protons
protons and electrons
protons, electrons, and neutrons
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Above is a Bohr-Rutherford diagram of an element.
Which element could be represented by this diagram?
calcium
cadmium
chlorine
no known element
Tags
NGSS.HS-PS1-1
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Above is a Bohr-Rutherford diagram of an element.
Which is the atomic mass for this element?
20
40
60
Tags
NGSS.HS-PS1-1
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
How many protons are in U-238?
238
146
92
330
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