Calcium Compounds and Ionic Charges

The video tutorial explains how to write the formula for calcium bromide. It begins by identifying calcium on the periodic table and explaining the nature of the bromide ion as a polyatomic ion with a one-minus charge. The tutorial then discusses the formation of the ionic compound by balancing the charges of calcium and bromide ions. Finally, it presents the complete formula for calcium bromide and explains how to name it based on the charges of the ions involved.

What is the symbol for calcium as it appears on the periodic table?

• C

• Ca

• Cu

• Cl

What does the 'ite' ending in bromide indicate?

• It is a noble gas

• It is a transition metal

• It is a polyatomic ion

• It is a metal

What is the charge of the bromide ion?

• 2-

• 1-

• 1+

• 2+

Why is calcium bromide considered an ionic compound?

• It involves a metal and a polyatomic ion

• It is made of metals

• It is made of nonmetals

• It is a covalent compound

What is the ionic charge of calcium?

• 1+

• 2+

• 2-

• 1-

How many bromide ions are needed to balance the charge of one calcium ion?

• Four

• One

• Two

• Three

What is the correct formula for calcium bromide?

• CaBr

• CaBr2

• CaBrO

• Ca(BrO2)2

If given the formula Ca(BrO2)2, what would be the name of the compound?

• Calcium bromine

• Calcium bromite

• Calcium bromate

• Calcium bromide