BE, BEING, CHARLES, CHEMICAL, CHEMISTRY, COMPOUND, COMPOUNDS, DANGEROUS, EITHER, EQUIPMENT, FORM, GLASSWARE, HEAT, HEATED, HGO, HORIZONTAL, INORGANIC, IS, LAB, LABORATORY, MAY, MERCURIC, MERCURY, METAL, MIRROR, OR, ORANGE, OXIDE, POISONOUS, POWDER, RED, SOLID, SUBSTANCE, SURFACE, THAT, TO, TOXIC, WINTERS, YELLOW,