Ionic Compounds and Magnesium Oxide

The video tutorial explains how to write the formula for magnesium oxide by using the periodic table to identify magnesium and oxygen as a metal and non-metal, respectively. It describes the formation of an ionic compound and the importance of balancing ionic charges to achieve a net charge of zero. The tutorial concludes with the final formula for magnesium oxide, MgO.

What type of compound is formed when magnesium and oxygen combine?

• Molecular compound

• Metallic compound

• Ionic compound

• Covalent compound

What is the ionic charge of magnesium in magnesium oxide?

• 2-

• 2+

• 1-

• 1+

Why must the ionic charges in magnesium oxide add up to zero?

• To decrease the compound's solubility

• To ensure the compound is neutral

• To make the compound stable

• To increase the compound's reactivity

What is the final chemical formula for magnesium oxide?

• Mg2O3

• MgO

• MgO2

• Mg2O

What happens to the ionic charges in the final formula of magnesium oxide?

• They are doubled

• They are removed

• They are reversed

• They are halved