A WORLD.FAMOUS
TABLE
There is a table (not one for dinner) that's probably the most famous table of science. (You can find
it in your physical science book or on page 119 of this book.) If you learn how to read it, you'll have
quick access to important stuff about elements. It's called the Periodic Table (because it's written in
rows, called periods).
Build your skill at reading the Periodic Table by finding the missing information in the samples
below. You can get more practice with the Periodic Table on pages 71,73,74, and 75 of this book.
REIUIEMBER:
Atomic Number
atomic rn&ss = protons + neutrons
atomic number = # protons
Iement SYmbol
Caeeo^t
#protons=#electrons
Name
Atomic Mass
a.
1.
a. atomic number
79
H
Au
Hydrogen
I
Gold
t97
b. atomic
mass
2. a. element
l2
Lead
207
6. a. atomic mass
28
10. a. # electrc;a
lt
Sodium
b. element symbol
9l
a. element symbol
b. atomic
11. a. atomic
b. # neutrons
23
Ra
Radon
226
c. element name
8. a. atomic number
78
B
Pt
Boron
Platinum
b. element name
Zirconium
88
Iron
a. atomic number
b. element symbol
7.
Na
4.
Zr
59
Fe
56
b. # protons
40
Nickel
b. atomic number
3. a. # protons
ll
atomic number
Ni
24
a. element
Pb
c,
name
Mg
5
b. # protons
q
82
d. name of element
Magnesium
26
# electrons
b. # neutroc*q
12. a.
29
Cu
b. # neutrons
195
Copper
i:
l
b. # neutron: :i
j
64
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Name
The BASIC/NoI Boring Middle Grades Science Book
t!:
72
Copyright o2002 by Incentive Publications, Inc., Nashville, TN.
WHICH ATOM IS WHICH?
Lvery kind of atom has its own unique look. All the atoms of an element have this same look.
Here's a chance for you to look at some atoms and tell what elements they are. Write the name of
ihe element next to each atom. You may need to use the Periodic Table to help you out. (You can
ilnd one on page 119 of this book.)
B.
C.
IF
E.
-
H
I.
*aa
l.lame
The BASICLNoI
Boring Middle Grades Science Book
7l
Copyright
@2002 by
Incentive Publications, Inc., Nashville, TN.