* Sulfur is a nonmetallic element that is yellow when in its pure form. It is a solid at room temperature and is insoluble in water. It is used in the production of sulfuric acid, rubber, and fertilizers.

* Tellurium is a metalloid that is silver-white in color when in its pure form. However, it can appear yellow when it is impure or when it is in a compound. It is a brittle solid at room temperature and is insoluble in water. It is used in the production of semiconductors, solar cells, and alloys.

* Gold is a metallic element that is yellow in color when in its pure form. It is a soft, ductile metal that is resistant to corrosion. It is used in the production of jewelry, coins, and electronics.