Download Chemical Bonding Activity

Name: _________________________
Hour: _____
Date: _____________
Chemistry: Chemical Bonding Activity
Introduction
When atoms bond together to form ionic compounds, they will not combine with just any other atom. For example, two
atoms that will never form an ionic bond are a sodium atom (Na) and a potassium atom (K). This is because both Na 1+
and K1+ are cations, or positively-charged ions. In order for two atoms to form an ionic bond, one must be a cation (+
charge) and the other must be an anion (- charge). Remember, opposite charges attract each other and same charges
repel each other. Opposite charges can bond to each other in an ionic bond and similar charges cannot. In this activity,
you will get some practice in learning how atoms form ionic bonds. Listen carefully as the teacher explains the procedure,
and then begin.
Activity
Part 1
Use the elements listed above the tables to determine the formula of the ionic bond formed when the two (2) elements
combine.
1.) Write the cation (the + ion) and the anion (the – ion) in the column labeled “Ion Symbol.”
2.) Write only the number of the charge that ion likes to form in the column labeled “Charge (#)”
3.) Flip the two numbers you wrote in the “Charge (#)” column and write them in the column labeled “How Many?”
4.) To write the chemical formula, first write the cation symbol followed by how many there are as a subscript. Then
write the anion symbol followed by how many there are as a subscript.
Example) Potassium (K) and Fluorine (F)
Ion Symbol
Charge (#)
How Many?
Chemical Formula
Cation
K+1
1
Anion
F-1
1
1
Charge (#)
How Many?
Chemical Formula
Charge (#)
How Many?
Chemical Formula
How Many?
Chemical Formula
1
KF
(K1F1)
1. Potassium (K) and Chlorine (Cl)
Ion Symbol
Cation
Anion
2. Beryllium (Be) and Oxygen (O)
Ion Symbol
Cation
Anion
3. Magnesium (Mg) and Fluorine (F)
Ion Symbol
Cation
Anion
Charge (#)
Part 2
Use the tables below to record 5 ionic bond formulas of your choice. Choose one element that likes to form a cation and
one element that likes to form an anion and write their names on the line. Then determine the Chemical Formula for the
ionic bond they would form. Use the same directions for Part 1 to fill out the data tables below.
1) ___________________________________________________
Ion Symbol
Charge (#)
How Many?
Chemical Formula
Cation
Anion
2) ___________________________________________________
Ion Symbol
Charge (#)
How Many?
Chemical Formula
Cation
Anion
3) ____________________________________________________
Ion Symbol
Charge (#)
How Many?
Chemical Formula
Cation
Anion
4) ____________________________________________________
Ion Symbol
Charge (#)
How Many?
Chemical Formula
Cation
Anion
5) ____________________________________________________
Ion Symbol
Charge (#)
How Many?
Chemical Formula
Cation
Anion
Chemical Formula of Compound
1.
2.
3.
4.
5.
Teacher’s Initials
Questions
1. What was the overall charge on all of the molecules (formula units) that you constructed?
2. Compare your pieces with the Periodic Table and answer these questions.
a. Do nonmetals form anions or cations?
b. Do metals form anions or cations?
c.
What is the charge for all of the elements in Group 1?
d. What is the charge for all of the elements in Group 2?
e. What is the charge for all of the elements in Group 17?
f.
Do cations share electrons with other cations?
g. Do anions get electrons from other anion pieces?
3. What type of elements (metals, metalloids, or nonmetals) form ionic bonds with metals?
4. What type of elements (metals, metalloids, or nonmetals) form ionic bonds with nonmetals?
5. Write the chemical formula that results when the following pairs of ions combine to form an ionic bond.
a. Sr2+ and O2b. Mn4+ and O2c.
Li1+ and Cl1-
d. Cs1+ and S2-
Questions
1. What was the overall charge on all of the molecules (formula units) that you constructed?
2. Compare your pieces with the Periodic Table and answer these questions.
a. Do nonmetals form anions or cations?
b. Do metals form anions or cations?
c.
What is the charge for all of the elements in Group 1?
d. What is the charge for all of the elements in Group 2?
e. What is the charge for all of the elements in Group 17?
f.
Do cations share electrons with other cations?
g. Do anions get electrons from other anion pieces?
3. What type of elements (metals, metalloids, or nonmetals) form ionic bonds with metals?
4. What type of elements (metals, metalloids, or nonmetals) form ionic bonds with nonmetals?
5. Write the chemical formula that results when the following pairs of ions combine to form an ionic bond.
e. Sr2+ and O2f.
Mn4+ and O2-
g. Li1+ and Cl1h. Cs1+ and S2-