Name ________________________
Date ___________________ Per________
Chapter 16 reading Guide Key
1. What physical or chemical properties are used to organize the periodic table? (3)
 Atomic number
 Atomic radius (size)
 Ionization energy
 Metals
 Non-metals
 Metalloids
2. Rows in the periodic table are referred to as ___periods__ (1)
3. All the elements in the periodic table are sorted into three main categories. List them. (3)
Metals, non-metals, metalloids
4. What are the main properties of these three classes? (3)
Metals : shiny, conduct electricity, opaque, malleable, ductile
Non-metals : poor conductors, transparent, shatter when
hammered (brittle), non-malleable, non-ductile
Metalloids: mixture of metallic & non-metallic properties
5. Columns in the periodic table are referred to as __ groups___. (1)
6. Fill in the group names in the following blank periodic table. (3)
1
2
3 – 12
13 – 16
17
A M
l e
k t
a a
l l
i s
A
l
k
a
l
i
E
a
r
t
h
M
e
t
a
l
s
T
r
a
n
s
i
t
i
o
n
M
e
t
a
l
s
N
o
C
o
m
m
o
n
N
a
m
e
H
a
l
o
g
e
n
s
18
NG
o a
b s
l e
e s
7. Give a description of each group from the previous question. (3)
1. used in soaps, found in ashes
2. resistant to fire
3 – 12 harder than alkali metals, less reactive with water, used for
structural purposes
13 – 16 None
17. salt – forming
18. unreactive gases
8. What is a valence electron? (2) Electrons in the outermost shell
9. What is electro-negativity?
Electron affinity – how much an atom is able to attract electrons from another atom
10. What is ionization energy? (1)
amount of energy its takes to remove an electron from an atom