Counting Atoms

Front

What is the Law of Conservation of Mass?

Back

The principle stating that the total amount of matter is not created or destroyed in a chemical reaction.

Front

What are reactants in a chemical equation?

Back

Substances that are present before a chemical reaction occurs, found on the left side of a chemical equation.

Front

How many atoms of Iron are in the compound Fe2O3?

Back

2

Front

How many atoms of hydrogen are in the compound C6H12O6?

Back

12

Front

How many atoms of carbon are in the compound C3H8?

Back

3

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas to show the reactants and products.

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 or moles of that substance are involved in the reaction.

Front

What are products in a chemical equation?

Back

Substances that are formed as a result of a chemical reaction, found on the right side of a chemical equation.

Front

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

Back

By adding the subscripts of each element in the chemical formula.