Mastering Ionic Compound Formulas Through Charge Balancing Techniques

The video tutorial explains how to name and write formulas for simple ionic compounds. It covers the process of identifying elements and their charges using the periodic table, balancing charges to achieve a net charge of zero, and using the crisscross method for verification. Examples include sodium chloride, potassium fluoride, calcium chloride, magnesium bromide, sodium nitride, and calcium phosphide. The tutorial emphasizes the importance of balancing charges and provides practice opportunities for learners.

What is the primary challenge when writing formulas for ionic compounds?

• Identifying metals and nonmetals

• Memorizing the names of compounds

• Balancing the charges of the ions

• Finding the elements on the periodic table

Which of the following is the correct formula for sodium chloride?

• Na2Cl2

• NaCl

• Na2Cl

• NaCl2

What is the charge of potassium in potassium fluoride?

• -1

• 0

• +1

• +2

How do you balance the charges in calcium chloride?

• Add more calcium atoms

• Add more chlorine atoms

• Use the crisscross method

• Change the charge of calcium

What is the formula for calcium chloride using the crisscross method?

• Ca2Cl

• CaCl

• Ca2Cl2

• CaCl2

What is the correct formula for magnesium bromide?

• MgBr

• MgBr2

• Mg2Br

• Mg2Br2

How many sodium atoms are needed to balance the charge in sodium nitride?

• 1

• 2

• 3

• 4

What is the charge of nitrogen in sodium nitride?

• -1

• -2

• -3

• 0

In the crisscross method, what is the result of moving the charges for calcium phosphide?

• CaP

• Ca3P

• Ca2P3

• Ca3P2

What is the net charge of calcium phosphide when balanced correctly?

• +2

• -1

• 0

• +1