FLASHCARDS SC.8.P.9.1

Front

What does the Law of Conservation of Mass state?

Back

Mass cannot be created or destroyed in ordinary physical and chemical changes.

Front

How does the Law of Conservation of Mass apply to physical changes?

Back

The total mass remains the same even if the substance changes form or state.

Front

How does the Law of Conservation of Mass apply to chemical changes?

Back

The total mass of reactants equals the total mass of products, even if new substances are formed.

Front

What happens to mass during a chemical reaction?

Back

Mass is conserved; it is rearranged but not lost.

Front

Give an example of a physical change demonstrating the Law of Conservation of Mass.

Back

Ice melting into water—mass remains the same despite the change in state.

Front

Give an example of a chemical change demonstrating the Law of Conservation of Mass.

Back

Baking soda and vinegar react to form a new substance, but the mass of the reactants equals the mass of the products.

Front

What happens to the mass of a substance when it burns?

Back

The mass of the ash and smoke equals the mass of the original substance.

Front

Why might the mass appear to decrease in some chemical reactions?

Back

Some mass escapes as gas, but it is still conserved.

Front

How can the Law of Conservation of Mass be demonstrated in a closed system?

Back

By ensuring no mass escapes, the total mass before and after a change can be measured and shown to be equal.

Front

Why is the Law of Conservation of Mass important in science?

Back

It helps predict the outcomes of physical and chemical changes and ensures accurate measurements in experiments.