4. Show an animation to help explain why mass is conserved in melting, dissolving, and in a chemical change. Show the animation Conservation of Mass in Physical and Chemical Changes. Explain that ...

The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the ...

The total mass stays the same during a chemical reaction. This is the law of conservation of mass. In both examples, the reactants and products stay in the beaker. The total mass of the beaker and ...

Katie: OK, it's says three hundred grams. Miss Roberts: OK, so we are looking at the conservation of mass. Now, mass is the measure of how much stuff or matter is in an object and it's measured in ...