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

How many atoms of Calcium are in 3Ca(OH)2?

Back

3 atoms

Front

If you start with 20g of reactants, how much product will you have?

Back

20g of products

Front

Identify the reactant in the equation: 2NaHCO3 -> Na2CO3 + CO2 + H2O

Back

NaHCO3

Front

Which model best represents the Law of Conservation of Mass?

Back

Model A

Front

What happens to mass during a chemical reaction?

Back

Mass remains constant; the total mass of reactants equals the total mass of products.

Front

What is a reactant?

Back

A reactant is a substance that undergoes a chemical change in a reaction.

Front

What is a product in a chemical reaction?

Back

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

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 chemical reaction that demonstrates the Law of Conservation of Mass?

Back

The reaction of baking soda (NaHCO3) with vinegar (acetic acid) produces carbon dioxide, water, and sodium acetate, with total mass conserved.