Chemicals, Elements, Formulas, Compounds, Chemistry.
(CaSO₄ ½H₂O): Used for making casts and molds. Chalk, Limestone, and Marble (CaCO₃): Different forms of calcium carbonate, used in construction materials, agriculture, and art. Other inorganic compounds: Nausadar (NH₄Cl): Ammonium chloride, used in fertilizers and soldering. Laughing gas (N₂O):