Calcium and Sulfate Compounds

The video tutorial explains how to write the chemical formula for calcium sulfate. It begins by identifying calcium on the periodic table and recognizing sulfate as a polyatomic ion. The tutorial discusses the charges of calcium and sulfate ions, emphasizing the need to balance these charges to achieve a net charge of zero. The final formula for calcium sulfate is presented as CaSO4.

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

• Ca

• Cu

• Cl

• C

Why is sulfate not found on the periodic table?

• It is a metal

• It is a polyatomic ion

• It is a noble gas

• It is a transition metal

What is the ionic charge of calcium?

• 2-

• 1-

• 2+

• 1+

What is the charge of the sulfate ion?

• 1+

• 2+

• 1-

• 2-

How do the charges of calcium and sulfate ions combine to form a neutral compound?

• 2+ and 1-

• 3+ and 3-

• 2+ and 2-

• 1+ and 1-

What is the chemical formula for calcium sulfate?

• CaSO3

• CaSO4

• CaS

• CaO