Counting Atoms

Front

How many atoms of carbon are there in the compound C3H4?

Back

3

Front

How many atoms of hydrogen are in the compound C3H4?

Back

4

Front

How many atoms of oxygen are in the compound 3Fe2O3?

Back

9

Front

How many chlorine atoms are in the compound MgCl2?

Back

2

Front

What does the Law of Conservation of Mass state?

Back

Matter is neither created nor destroyed, but can change from one form to another.

Front

What is a 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 in a molecule.

Front

What is a coefficient in a chemical equation?

Back

A number placed in front of a chemical formula to indicate how many molecules are involved in the reaction.

Front

What is the total number of atoms in the compound C2H6?

Back

8 (2 carbon + 6 hydrogen)

Front

How many atoms of nitrogen are in the compound NH3?

Back

1

Front

What is the formula for calculating the total number of atoms in a compound?

Back

Add the number of atoms of each element together.