Writing Chemical Formulas Review

Front

What is the chemical formula for the ionic compound of Oxygen (O) and Potassium (K)?

Back

K₂O

Front

In the ionic compound X₃Y₂, what is the charge for 'X'?

Back

+2

Front

What is the term for the number that goes below the element symbol in a chemical formula?

Back

Subscript

Front

What does the number '4' represent in Q₄?

Back

Subscript

Front

What is the term for the number that goes above the element symbol in a chemical formula?

Back

Superscript

Front

What does a superscript indicate in a chemical formula?

Back

The charge of the atom.

Front

What does a subscript indicate in a chemical formula?

Back

The number of atoms of that element in the compound.

Front

How do you determine the formula for an ionic compound?

Back

By balancing the charges of the ions.

Front

What is the charge of Potassium (K) in ionic compounds?

Back

+1

Front

What is the charge of Oxygen (O) in ionic compounds?

Back

-2