Conservation of Mass

• Conservation of mass


  No atoms are created or destroyed, only the bonds chande
• Mass can seem like it decreases when gas escapes.
• If a mass has increased it is because one of the reactants is a gas
• If a mass has decreased it is because one of your products is a gas
• To conserve the mass of gasses perform experiments in a sealed container
• What is a chemical change?

  A rearrangement of the atoms in the reactants, to form the products