Barium Sulfide Properties and Formulas

The video tutorial explains how to write the formula for barium sulfide. It begins by identifying barium and sulfur on the periodic table, noting that barium is a metal and sulfur is a non-metal, forming an ionic compound. The tutorial discusses the importance of balancing ionic charges, with barium having a 2+ charge and sulfide a 2- charge, to ensure the compound is neutral. The final formula for barium sulfide is determined to be BaS. The video concludes with a summary and thanks from Dr. B.

What type of compound is formed when barium and sulfur combine?

• Molecular compound

• Covalent compound

• Ionic compound

• Metallic compound

What is the ionic charge of barium in barium sulfide?

• 2-

• 1+

• 1-

• 2+

Why must the charges in barium sulfide add up to zero?

• To increase the compound's reactivity

• To ensure the compound is neutral

• To decrease the compound's solubility

• To make the compound stable

What is the chemical formula for barium sulfide?

• Ba2S3

• BaS

• Ba2S

• BaS2

What happens to the charges in the final formula of barium sulfide?

• They are doubled

• They are reversed

• They are ignored

• They are neutralized