3.1 Law of Conservation of Mass HW

Front

What does the Law of Conservation of Mass state?

Back

Mass cannot be created nor destroyed, it can only change form.

Front

What is an example of the Law of Conservation of Mass in a chemical reaction?

Back

In a chemical reaction, the total mass of the reactants equals the total mass of the products.

Front

If a chemical reaction starts with 50g of reactants, what should be the total mass of the products?

Back

50g of products.

Front

Which model best represents the Law of Conservation of Mass?

Back

A model that shows the same number of atoms before and after the reaction.

Front

What happens to mass during a physical change?

Back

Mass is conserved; it does not change.

Front

Can mass be created or destroyed in a chemical reaction?

Back

No, mass is never created or destroyed.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations ensures that the Law of Conservation of Mass is upheld.

Front

What is a reactant?

Back

A substance that undergoes a chemical change in a reaction.

Front

What is a product?

Back

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

Front

How can you demonstrate the Law of Conservation of Mass in a lab?

Back

By measuring the mass of reactants before a reaction and the mass of products after the reaction.