Law of Conservation of Mass

Front

What is the Law of Conservation of Mass?

Back

The Law of Conservation of Mass states that mass cannot be created nor destroyed in a chemical reaction; it can only change form.

Front

What happens to matter in a chemical reaction?

Back

Matter is transformed or changed, but the total mass remains the same.

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 reaction?

Back

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

Front

Which of the following is not a chemical reaction: Burning of wood, Milk going bad, Mixing vinegar and baking soda, Melting of ice?

Back

Melting of ice is not a chemical reaction; it is a physical change.

Front

Can mass be created or destroyed in a chemical reaction?

Back

No, mass cannot be created or destroyed; it can only change form.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change.

Front

What do we call the substances that undergo change in a chemical reaction?

Back

The substances that undergo change are called reactants.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance without changing its identity, while a chemical change results in the formation of new substances.