Law of Conservation of Mass

Front

What does the Law of Conservation of Mass state?

Back

The Law of Conservation of Mass states that mass cannot be created or destroyed in a chemical reaction; it can only change forms.

Front

What happens to the atoms in wood and oxygen when they are burned?

Back

The atoms in the wood and oxygen rearrange and form smoke and ash.

Front

If you start with 20g of reactants, how much will the products weigh after the reaction?

Back

The products will weigh a total of 20g.

Front

What are the starting substances in a chemical equation called?

Back

Reactants.

Front

What is the weight of a glass of water with 6 ice cubes after the ice melts?

Back

The weight will be approximately 18 ounces.

Front

What is a chemical reaction?

Back

A chemical reaction is a process where reactants transform into products, involving the rearrangement of atoms.

Front

What are products in a chemical reaction?

Back

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

Front

Can mass be lost during a chemical reaction?

Back

No, according to the Law of Conservation of Mass, mass cannot be lost; it remains constant.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change, as it changes state but not mass.

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change, as it transforms into ash and smoke.