Counting Atoms

Front

A subscript is the small number below the element symbol that tells the number of _______ of that element.

Back

atoms

Front

Which one is the coefficient in the formula 4H2O?

Back

4

Front

How many elements are in the compound C2H8O?

Back

3

Front

How many hydrogen atoms are in 4H2O?

Back

8

Front

How many atoms are present if there is no subscript following the element symbol?

Back

1

Front

What does a coefficient in a chemical formula represent?

Back

The number of molecules or formula units of the substance.

Front

What does a subscript in a chemical formula indicate?

Back

The number of atoms of the element in one molecule of the compound.

Front

In the compound H2O, how many oxygen atoms are present?

Back

1

Front

In the compound C2H6, how many carbon atoms are present?

Back

2

Front

What is the total number of atoms in the compound C3H8?

Back

11 (3 Carbon + 8 Hydrogen)