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, mass is neither created nor destroyed during a chemical reaction; it remains constant.

Front

What does a balanced chemical equation indicate?

Back

A balanced chemical equation indicates that the number of atoms of each element is the same on both sides of the equation, showing that mass is conserved.

Front

What is a chemical reaction?

Back

A chemical reaction is a process in which substances undergo chemical changes that result in the formation of new substances.

Front

Back

Front

What is the significance of reactants in a chemical reaction?

Back

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

Front

What are products in a chemical reaction?

Back

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

Front

What is the role of coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of a substance involved in a reaction, helping to balance the equation.

Front

What does it mean if a chemical equation is unbalanced?

Back

An unbalanced chemical equation means that the number of atoms of each element is not the same on both sides, violating the Law of Conservation of Mass.

Front

What happens to the mass of substances during a chemical reaction?

Back

The total mass of the substances before the reaction is equal to the total mass of the substances after the reaction.

Front

What is an example of a physical change?

Back

An example of a physical change is melting ice; the substance changes state but remains the same chemically.