Chemistry: Chemical Bonding Activity
Introduction
In this activity, you will get some practice in learning how atoms form ionic bonds.
Elements
potassium and bromine
potassium and oxygen
magnesium and bromine
aluminum and carbonate ion
lead (IV) and carbonate ion
copper (II) and hydroxide ion
ammonium ion and nitrate ion
calcium and phosphate ion
aluminum and oxygen
ammonium ion & phosphate ion
Ion Name
Ion Symbol
ion
Cation
Anion
Cation
Anion
Cation
Anion
Cation
Anion
Cation
Anion
Cation
Anion
Cation
Anion
Cation
Anion
Cation
Anion
Cation
Anion
How
Many?
Chemical Formula
Use the pieces to make formula units for five more compounds, record the formulas below and get your teacher’s initials.
Formula Unit of Compound
1.
4.
2.
5.
3.
Questions
1. What is the overall charge on all of your formula units?
2. If you need more than 1 of a cation or anion to balance the formula, how is the number shown in the formula?
3. How is the formula written differently for compounds containing polyatomic ions?
4. Do cation pieces fit with other cation pieces? Explain why in terms of ions and charge, not the way they are cut.
5. Do anion pieces fit with other anion pieces? Explain why in terms of ions and charge, not the way they are cut.
6. Do metals form anions or cations?
7. Do nonmetals form anions or cations?
8. Write the chemical formula that results when the following pairs of ions combine to form an ionic bond.
a. Sr2+ and O2d. Li1+ and Cl1b. Mn4+ and O2-
e. Cs1+ and S2-
c. K+ and SO42-
f. Al3+ and SO42-