Chemistry Basics & the Periodic Table
Practice Test Questions 

from Science Prof Online


Atomic Theory & Periodic Table Test Qus
Atomic Theory & Periodic Table
Review Questions

Free review questions to help students better understand Atomic Theory & the Periodic Table.

The following questions, from the Virtual Cell Biology Classroom, are designed to help students better understand Atomic Theory and the Periodic Table. All questions are based on materials that can be found on the Atomic Theory & Periodic Table Lecture Main Page.

​1. Which is simplest?

a. molecule       
b. atom       
c. elephant       
d. compound       
e. synthesis

2. How is an isotope different than a normal atom?
a. different number of electrons
b. different number of protons
c.different number of quarks
d. different number of neutrons

3. The ____ charge of a proton is balanced by the ____ charge of a(n) ____.

a. negative, positive, electron
b. positive, neutral, neutron
c. negative, negative, electron
d.positive, negative, electron

4. If an element's atomic number is 6, its mass number is ________.

a. 3         b. 6          c. 8          d. 12           e. 18

5. The maximum number of valence electrons an atom can have is ____.

a. 2        b. 4        c. 8          d. 12           e. 18        

6. You can determine the number of electron orbitals an atom has by looking at its _______.

a. atomic number        b. group number     
c. mass number         d. period number    

10. What is the maximum number of electrons an atom can have on its innermost orbital?

a. 2        b. 4        c. 8          d. 12           e. 18  

Page last updated: 5/2016
Click here for a printable, detailed periodic table.
Virtual Cell Biology

You have free access to a large collection of materials used in a college-level introductory Cell Biology Course. The Virtual Cell Biology Classroom provides a wide range of free educational resources including Power Point Lectures, Study Guides, Review Questions and Practice Test Questions.
Endomembrane System of a Eukaryotic Cell, Mariana Ruiz

Need Help with Chemistry?

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Below are links to those that relate to chemistry:

 1. ​Chemistry Basics & Periodic Table

2. Chemistry of Solutions

3. Acids, Bases, Buffers & pH
Chemicals in Flasks, Joe Sullivan
7. If the symbol for a chemical element contains two letters, like the “Na” of sodium, we know that:

a. It is a very large atom.
b. It is the most common atom that begins with the letter N.
c. It is a very small atom.
d. It is not the most common element to begin with the letter N.    

8. How many valence electrons does Sodium (Na) have? (Check your periodic table.) 

a. 1          b. 2           c. 3          d. 4          e. 8

9. Changing the number of neutrons in an atom makes it a(n) ________. Changing the number of electrons alters an atoms ________. But changing the number of protons in an atom would make it a(n) ________.

a. ion, atomic number, isotope
b. isotope, charge, different element
c. different element, mass number, isotope
d. positive atom, atomic mass, ion
e. grouchy bear, swag, total badass 

10. What is the maximum number of electrons an atom can have on its innermost orbital?

a. 2        b. 4        c. 8          d. 12           e. 18