After observing a demonstration of a chemical reaction between a burning candle and the oxygen in the air, learners use atom model cut-outs to model the reaction and see that all the atoms in the reactants show up in the products.

On this site, find a variety of materials to help young scholars understand the conservation of matter. Create lessons that allow students to measure and graph quantities that could show even if matter is heated, cooled or combined with...

This lesson focuses on chemical reactions including what they are and an explanation of each part of a chemical equation.