Review worksheet #1 to share

Front

What is the correct name for KI?

Back

Potassium iodide, as it indicates a bonded molecule.

Front

What is the correct formula for calcium oxide?

Back

CaO, because the charges +2 and -2 reduce to a 1:1 ratio.

Front

What is the correct formula for calcium chloride?

Back

CaCl₂, as the charges +2 and -1 are cross-crossed.

Front

Are subscripts included when naming chemical formulas?

Back

No, subscripts are never included in the name.

Front

What do subscripts in a chemical formula indicate?

Back

The number of atoms of each element in the molecule or compound.

Front

What is the charge of calcium in calcium chloride?

Back

+2.

Front

What is the charge of chlorine in calcium chloride?

Back

-1.

Front

What is the significance of prefixes in chemical formulas?

Back

Prefixes are not written for the number '1' in chemical formulas.

Front

What is the formula for a compound with calcium and oxygen?

Back

CaO.

Front

What is the formula for a compound with calcium and chlorine?

Back

CaCl₂.