Counting Atoms

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.

Front

What does the subscript in a chemical formula represent?

Back

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

Front

How many total atoms are in the compound C2H8O?

Back

11

Front

What is the chemical formula for three hydrogen (H), one sulfur (S), and four oxygen (O)?

Back

H3SO4

Front

How many Sodium (Na) atoms are in 6NaCl?

Back

6

Front

How many Aluminum atoms are in Al2O3?

Back

2

Front

How many atoms of Hydrogen are in the compound H2O?

Back

2

Front

What is the chemical formula for water?

Back

H2O

Front

What does the coefficient in a chemical formula indicate?

Back

The coefficient indicates the number of molecules or formula units.