What better way is there to introduce conservation of mass than a few simple experiments? Young chemists conduct two chemical reactions, take the masses of reactants and products, then compare their results to determine...

[Free Registration/Login Required] Before you can balance an equation, you need to count the number of each atom present in the reactants and products. Using the example that is shown here, apply the numbers and table to track how many...

Because atoms are neither created nor destroyed in a chemical reaction, the total mass of products in a reaction must be the same as the total mass of the reactants.