Stemscope Review: Conservation of Mass

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 the reactants equals the total mass of the products.

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation, indicating that mass is conserved.

Front

What are reactants in a chemical reaction?

Back

Reactants are the starting substances in a chemical reaction that undergo change to form products.

Front

What are products in a chemical reaction?

Back

Products are the substances formed as a result of a chemical reaction.

Front

What is a coefficient in a chemical equation?

Back

A coefficient is a number placed in front of a compound or element in a chemical equation to indicate how many molecules or moles are involved.

Front

What is a subscript in a chemical formula?

Back

A subscript is a number written below and to the right of a chemical symbol that indicates the number of atoms of that element in a molecule.

Front

How do you determine the mass of products formed in a reaction?

Back

To determine the mass of products, use the total mass of the reactants and apply the Law of Conservation of Mass.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations is important because it reflects the conservation of mass and ensures that the same number of atoms of each element are present before and after the reaction.

Front

What is the difference between a reactant and a product?

Back

A reactant is a substance that starts a chemical reaction, while a product is a substance that is produced as a result of the reaction.

Front

What is the role of coefficients in stoichiometry?

Back

Coefficients are used in stoichiometry to calculate the amounts of reactants and products involved in a chemical reaction.