Name: 
 

Chemistry – Atomic and Molecular Structure Lesson 1-1 Posttest



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

The nucleus of an atom contains
a.
electrons and nucleons.
b.
protons and neutrons.
c.
protons and electrons.
d.
solids, liquids, and gases.
 

 2. 

The Periodic Table of the Elements contains _______ elements.
a.
18
b.
110
c.
118
d.
too many to count
 

 3. 

Another name for the electron shells that surround an atom’s nucleus is _______.
a.
energy levels
b.
pathways
c.
bonds
d.
routes
 

 4. 

It is the _________ in an atom’s outermost shell that are responsible for bonding.
a.
protons
b.
neutrons
c.
ions
d.
electrons
 

 5. 

All elements in a row (Period) of the Periodic Table of the Elements use the same number of _______ for their electrons.
a.
protons
b.
neutrons
c.
shells
d.
cells
 



 
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