Counting Atoms in Formulas Review Game

Front

What is the total number of atoms in the formula 5P2O3?

Back

15

Front

What type of substance is H2O?

Back

Compound

Front

How many oxygen atoms are present in one molecule of H2O?

Back

1

Front

How many molecules are represented in the formula 5P2O3?

Back

5

Front

In the chemical formula 3V2O5, what does the number 3 represent?

Back

Coefficient

Front

What is a coefficient in a chemical formula?

Back

A number that indicates how many molecules or formula units are present.

Front

How do you determine the number of atoms of an element in a compound?

Back

By multiplying the subscript of the element by the coefficient.

Front

What is the subscript in a chemical formula?

Back

A number written below and to the right of a chemical symbol indicating the number of atoms of that element.

Front

In the formula 2H2O, how many total hydrogen atoms are there?

Back

4 (2 molecules x 2 hydrogen atoms each).

Front

What is the difference between a molecule and a compound?

Back

A molecule is two or more atoms bonded together, while a compound is a type of molecule that contains at least two different elements.