Writing Formulas (Review!)

Front

What is the chemical formula for Iron (III) bromide?

Back

FeBr₃

Front

What is the charge of nickel in the compound NiF₃?

Back

+3

Front

What is the charge of cobalt in the compound Co₂O?

Back

+1

Front

What is the formula for calcium phosphate?

Back

Ca₃(PO₄)₂

Front

What is the charge of iron in the compound FeO?

Back

+2

Front

Define a chemical formula.

Back

A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound.

Front

What does the subscript in a chemical formula indicate?

Back

The subscript indicates the number of atoms of the element in the compound.

Front

What is the significance of Roman numerals in naming compounds?

Back

Roman numerals indicate the oxidation state (charge) of the metal in the compound.

Front

How do you determine the charge of a transition metal in a compound?

Back

The charge can be determined by balancing the total charge of the compound with the known charges of the other elements.

Front

What is the formula for magnesium chloride?

Back

MgCl₂