Law of Conservation of Mass

Front

What does the Law of Conservation of Mass state?

Back

Mass is never created or destroyed in a chemical reaction.

Front

What happens to the total mass of reactants and products in a chemical reaction according to the Law of Conservation of Mass?

Back

The total mass stays the same.

Front

Can matter be created or destroyed?

Back

No, matter can only be transformed or changed.

Front

In the compound Ca(OH)₂, how many Calcium (Ca) atoms are present?

Back

1 atom.

Front

How many total atoms are in the compound 2MgCl₂?

Back

6 atoms.

Front

What is an example of a physical change where mass is conserved?

Back

Melting ice into water.

Front

What is an example of a chemical reaction where mass is conserved?

Back

Burning wood, where the mass of the ash and gases equals the mass of the original wood.

Front

What is the significance of balancing chemical equations?

Back

It demonstrates the Law of Conservation of Mass by showing that the number of atoms of each element is the same on both sides.

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A substance that is formed as a result of a chemical reaction.