Chemistry Reference
In-Depth Information
elemental exceptions to the method described here, but your instructor
may not expect you to know about them. If he or she does, consult a refer-
ence text to see the complete configurations of all elements.
I hope that you now see that the periodic table contains more informa-
tion than you first suspected. Let's review what you just learned.
Lesson 3 - 7 Review
1.
The _______________ number is the number of protons found in the
nucleus of an atom.
2.
Semimetals are also called ________________.
3.
The columns of the periodic table are called _______________ of
families.
4.
The horizontal rows of the periodic table are called ______________.
5.
The elements in the first column of the periodic table are called
_______________.
6.
______________ are elements that tend to form positive electrons by
losing electrons.
Chapter 3 Examination
Part I—Matching
Match the following terms to the definitions that follow. Not all an-
swers will be used.
a. proton
b. neutron
c. electron
d. mass number
e. atomic number
f. kernel
g. negative
h. elemental notation
j. quantum numbers
k. valence
l. orbital
m. Hund's Rule
i. positive
_____1. A negatively charged particle found in the cloud region of the
atom.
_____2. The nucleus and all of the electrons, except the valence
electrons.
_____3. The total number of protons and neutrons in an atom.
