Law of Conservation of Mass

Front

What is the Law of Conservation of Mass?

Back

Mass is never created or destroyed in a chemical reaction.

Front

A chemical reaction is balanced when:

Back

Both sides have the same number of atoms.

Front

If a reaction starts with 20g of reactants, how much should it produce?

Back

A total of 20g of products.

Front

When sodium and chlorine combine to form sodium chloride, sodium chloride is the:

Back

Product.

Front

Matter cannot be created nor destroyed; it can only be:

Back

Transformed or changed.

Front

What happens to the mass of reactants in a chemical reaction?

Back

The total mass of reactants equals the total mass of products.

Front

What is a reactant?

Back

A substance that undergoes a chemical change in a reaction.

Front

What is a product?

Back

A substance that is formed as a result of a chemical reaction.

Front

What does it mean to balance a chemical equation?

Back

To ensure that the number of atoms for each element is the same on both sides of the equation.

Front

Can mass be created in a chemical reaction?

Back

No, mass cannot be created or destroyed.