Chemical reactions follow a rule called the Law of Conservation of Mass. This rule says that matter cannot be made or destroyed.
Here’s what that means:
The total mass of the starting materials (called reactants) is equal to the total mass of the ending materials (called products).
A balanced chemical equation shows this conservation. For example, when hydrogen and oxygen react to make water, it looks like this:
Research shows that in closed systems, which don’t exchange matter with their surroundings, any changes in mass are tiny—less than 0.01%.
Knowing this law is important. It helps us predict what will happen in reactions and understand how chemical processes work.
Chemical reactions follow a rule called the Law of Conservation of Mass. This rule says that matter cannot be made or destroyed.
Here’s what that means:
The total mass of the starting materials (called reactants) is equal to the total mass of the ending materials (called products).
A balanced chemical equation shows this conservation. For example, when hydrogen and oxygen react to make water, it looks like this:
Research shows that in closed systems, which don’t exchange matter with their surroundings, any changes in mass are tiny—less than 0.01%.
Knowing this law is important. It helps us predict what will happen in reactions and understand how chemical processes work.