Calcium and Sulfite Compounds

The video tutorial explains how to write the chemical formula for calcium sulfite. It begins by identifying the element symbol for calcium and the polyatomic ion for sulfite, SO3, which carries a two-minus charge. The tutorial then discusses the ionic nature of the compound, with calcium being a metal with a two-plus charge. By balancing these charges, the formula for calcium sulfite is determined to be CaSO3, resulting in a net charge of zero.

What is the element symbol for calcium?

• Ca

• C

• Cl

• Cu

Which of the following is a polyatomic ion?

• Sodium

• Sulfite

• Calcium

• Chloride

What is the ionic charge of the sulfite ion?

• 1+

• 2+

• 2-

• 1-

In which group of the periodic table is calcium found?

• Group 4

• Group 3

• Group 2

• Group 1

What is the net charge of the compound formed by calcium and sulfite?

• 0

• 2-

• 3+

• 1+

What is the correct formula for calcium sulfite?

• CaSO4

• CaSO3

• CaS

• CaO