Naming and Properties of Ionic Compounds

The video tutorial explains how to name the compound Na2S. It begins by identifying Na2S as a binary ionic compound, consisting of a metal (sodium) and a non-metal (sulfur). The tutorial then outlines the steps to name the compound: first, write the name of the metal as it appears on the periodic table, followed by the non-metal with its ending changed to 'ide', resulting in the name sodium sulfide. Finally, the video demonstrates how to convert the name back to the formula by considering the ionic charges of sodium and sulfur.

What type of compound is Na2S?

• Covalent compound

• Molecular compound

• Metallic compound

• Ionic compound

What is the first step in naming a binary ionic compound?

• Write the name of the metal

• Write the name of the non-metal

• Balance the charges

• Change the ending of the metal to 'ide'

How do you modify the name of the non-metal in a binary ionic compound?

• Add 'ate' to the end

• Add 'ite' to the end

• Change the ending to 'ide'

• Leave it unchanged

What is the name of the compound Na2S?

• Sodium sulfite

• Sodium sulfur

• Sodium sulfide

• Sodium sulfate

What is the ionic charge of sodium in Na2S?

• 1+

• 2+

• 1-

• 2-

Why are there two sodium atoms in the formula Na2S?

• To balance the 1- charge of sulfur

• To balance the 2+ charge of sulfur

• To balance the 1+ charge of sulfur

• To balance the 2- charge of sulfur