8.5E - Law of Conservation of Mass(AML)

Front

What is the Law of Conservation of Mass?

Back

The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction. The total mass of reactants equals the total mass of products.

Front

If you mix 125 grams of sugar, 250 grams of water, and 5 grams of flavoring, what is the total weight of the solution?

Back

380 grams

Front

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

Back

The mass of the reactants before the reaction is equal to the mass of the products after the reaction.

Front

What does a coefficient in a chemical equation represent?

Back

A coefficient indicates the number of molecules or moles of a substance involved in a reaction.

Front

How many different elements are in the compound H2O?

Back

There are 2 different elements in H2O: Hydrogen (H) and Oxygen (O).

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 a product in a chemical reaction?

Back

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

Front

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

Back

The total mass of products should be 20g.

Front

What is the difference between a coefficient and a subscript in a chemical formula?

Back

A coefficient indicates the number of molecules, while a subscript indicates the number of atoms of an element in a molecule.

Front

What does it mean if a chemical reaction is balanced?

Back

A balanced chemical reaction has the same number of each type of atom on both sides of the equation.