Name: ________________________________________________________________
Study Guide for Test # 4 – The Periodic Table and Ionic Compounds
Use the periodic table to find an element’s atomic number and atomic mass.
Example questions:
Oxygen
8
Which of these numbers is the atomic mass?
O
Which of these numbers is the number of protons?
15.999
What element has 46 protons?
On the periodic table, find:

nonmetals

metalloids

metals

transition metals

noble gasses
Write a dot diagram for elements in families 1, 2, 15, 16, 17, and 18.
Li
Be
N
O
F
Ne
Na
Mg
P
S
Cl
Ar
K
Ca
As
Se
Br
Kr
Identify reactive and unreactive families of elements, and explain their reactivity.
Which groups are the most reactive?
Why?
Which group is the least reactive?
Why?
Explain how an ionic compound forms.
What happens to electrons in an ionic bond?
What holds the atoms together in an ionic bond?
Predict the oxidation states of elements in ionic compounds.
What is the charge of a magnesium ion?
What is the charge of a lithium ion?
What is the charge of a sulfide ion?
What is the charge of a bromide ion?
Predict the formulas of ionic compounds.
What is the formula for potassium fluoride?
What is the formula for beryllium oxide?
What is the formula for barium nitride?
Given the formula, correctly name an ionic compound.
What is RbF called?
What is H2S called?
What is KCl called?
Identify the properties of an ionic compound.
Hardness:
Shape:
Melting temperature:
Boiling temperature:
Electrical conductivity:
Energy change when it forms:
Know the following vocabulary:
family
a column in the periodic table;
elements in the same family will have similar properties
(same as group)
group
a column in the periodic table;
elements in the same family will have similar properties
(same as family)
period
a row across the periodic table;
chemical properties tend to repeat from one period to another
noble gas
group 18, sometimes called group 8A;
elements that almost never form compounds with other atoms
ionic bond
one atom gives away one or more electrons to another atom;
opposite electric charges hold the resulting ions together
cation
positively charged ion;
often made from elements on the left side of the periodic table
anion
negatively charged ion;
often made from elements on the right side of the periodic table
formula unit
formula that shows the ratio of elements in an ionic compound
binary
composed of only two elements
monatomic ion
a single atom with an electric charge
oxidation state
the charge of an ion;
usually +1, +2, +3, -1, -2, -3, or 0
(same as oxidation number)
oxidation number
electrolyte
the charge of an ion;
usually +1, +2, +3, -1, -2, -3, or 0
(same as oxidation state)
an ionic compound that will conduct electricity when in solution