Law of Conservation of Mass Chemical Equations Law of Conservation of Mass

Law of Conservation of Mass Matter cannot be created or destroyed Whatever element is on one side of a chemical equation, has got to be on the other side as well, in the same type and amount

2H2 + O2 2 H2O Reactants – the compounds found on the left side of the arrow, the compounds put into the reaction Products – the compounds formed during the chemical reaction

2H2 + O2 2 H2O Types of questions you will be asked: How many of ___ element are on the reactant/product side of the equation? Which of these equations follows the Law of Conservation of Mass? Is this equation balanced?

Steps to determining balanced equations: Draw a T-Chart on both sides List elements – don’t repeat Check for () and distribute Check for coefficients and distribute Total up both sides – all elements should match

Practicing with equations