Law of Conservation of Mass

Front

What is the Law of Conservation of Mass?

Back

Mass is never created or destroyed in a chemical reaction.

Front

What happens to the mass of reactants and products in a chemical reaction?

Back

They both will weigh the same.

Front

If 4 grams of hydrogen and 32 grams of oxygen combine, what is the mass of the water produced?

Back

36 grams of water.

Front

Does the mass change during a physical change, like ice melting into water?

Back

No, the mass stays the same.

Front

What is an example of a physical change?

Back

Ice melting into water.

Front

What is an example of a chemical change?

Back

Burning wood.

Front

What is the significance of the Law of Conservation of Mass in chemical reactions?

Back

It ensures that the total mass of reactants equals the total mass of products.

Front

Can mass be created or destroyed in a closed system?

Back

No, mass cannot be created or destroyed.

Front

What is the formula for calculating the total mass of products in a reaction?

Back

Total mass of products = Total mass of reactants.

Front

What happens to the mass of a substance when it undergoes a chemical reaction?

Back

The mass remains constant.