Sodium Oxide and Ionic Compounds

The video tutorial explains how to write the chemical formula for sodium oxide. It begins by identifying sodium and oxygen on the periodic table, noting that sodium is a metal and oxygen is a non-metal, forming an ionic compound. The tutorial then details how to balance the charges of sodium (+1) and oxygen (-2) to achieve a net charge of zero, requiring two sodium atoms for every oxygen atom. The crisscross method is used to verify the formula, resulting in Na2O.

Which elements are involved in forming sodium oxide?

• Sodium and Carbon

• Sodium and Nitrogen

• Sodium and Oxygen

• Sodium and Hydrogen

What type of compound is sodium oxide?

• Molecular

• Ionic

• Metallic

• Covalent

What is the charge of a sodium ion?

• -2

• +2

• -1

• +1

How many sodium ions are needed to balance the charge of one oxide ion?

• Two

• One

• Three

• Four

What method can be used to verify the formula of sodium oxide?

• Substitution method

• Cross-check method

• Crisscross method

• Balancing method

What is the final chemical formula for sodium oxide?

• NaO

• Na2O

• NaO2

• Na2O2