Law of Conservation of Mass

Front

What is the Law of Conservation of Mass?

Back

The Law of Conservation of Mass states that in a closed system, the mass of the reactants must equal the mass of the products in a chemical reaction.

Front

If the mass of reactants is doubled, what happens to the mass of the products?

Back

The mass of the products will also double.

Front

What is the total mass of a mixture if 25 grams of salt is dissolved in 1,000 grams of water?

Back

1,025 grams.

Front

What is the mass of a solution if 0.25 grams of baking soda is added to 5 grams of water?

Back

5.25 grams.

Front

If a reaction starts with 20 grams of reactants, what should be the total mass of the products?

Back

20 grams.

Front

In a chemical reaction, what is formed as a result of the reaction?

Back

Products.

Front

What happens to mass during a chemical reaction?

Back

Mass is neither created nor destroyed; it is conserved.

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction.

Front

What is an example of a chemical reaction that demonstrates the Law of Conservation of Mass?

Back

The reaction of sodium and chlorine to form sodium chloride (table salt).

Front

How can you verify the Law of Conservation of Mass in a laboratory experiment?

Back

By measuring the mass of reactants before the reaction and the mass of products after the reaction to ensure they are equal.