8.5E - 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. The total mass of reactants equals the total mass of products.

Front

If a reaction starts with 75g of reactants, how much mass of products will be produced?

Back

75g of products.

Front

What happens to matter during a chemical reaction according to the Law of Conservation of Mass?

Back

Matter cannot be created or destroyed; it can only be transformed or changed.

Front

If 12g of Carbon reacts with 16g of Oxygen, what is the total mass of carbon monoxide (CO) formed?

Back

28g of CO.

Front

What are reactants in a chemical equation?

Back

Reactants are the starting substances that undergo a chemical change.

Front

What are products in a chemical equation?

Back

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

Front

Can mass be lost in a chemical reaction?

Back

No, mass cannot be lost; it is conserved.

Front

What is an example of a transformation of matter?

Back

Burning wood transforms it into ash, smoke, and gases, but the total mass remains the same.

Front

If a reaction starts with 20g of reactants, how much mass of products will be produced?

Back

20g of products.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations ensures that the Law of Conservation of Mass is upheld, showing that mass is conserved.