Barium and Nitrate Compounds

The video tutorial explains how to write the chemical formula for barium nitrate. It begins by identifying barium and nitrate, highlighting nitrate as a polyatomic ion with a charge of 1-. The tutorial then discusses balancing ionic charges, noting that barium has a 2+ charge. To balance the charges, two nitrate ions are needed for each barium ion, resulting in the formula Ba(NO3)2. The video concludes with a summary of the process.

What is the element symbol for barium as found on the periodic table?

• Br

• Be

• Ba

• B

Which of the following best describes nitrate?

• A single element found on the periodic table

• A compound with no charge

• A polyatomic ion with a charge of 1-

• A metal with a positive charge

Why is it important to memorize the nitrate ion?

• It is rarely used in chemistry.

• It is a metal ion.

• It has no charge.

• It is a common polyatomic ion in chemistry.

What type of compound is formed by barium and nitrate?

• Covalent compound

• Molecular compound

• Ionic compound

• Metallic compound

What is the charge of barium in the compound?

• 1+

• 2+

• 2-

• 1-

How many nitrate ions are needed to balance the charge of one barium ion?

• Two

• One

• Four

• Three

What is the correct formula for barium nitrate?

• Ba(NO3)2

• Ba2(NO3)2

• Ba2(NO3)

• Ba(NO3)