It could be both.
Seaborgium is a man made chemical element.
Mendelevium is a man made chemical element.
Scandium is a natural chemical element.
Cadmium is a natural chemical element.
Actinium is a natural chemical element, it is not a man-made element.
PVC (polyvinyl chloride) is a man-made synthetic plastic polymer made from vinyl chloride. It is not a natural substance but is manufactured through a chemical process.
Protactinium is a natural radioactive chemical element.
natural chemical symbol is Na chemical name for salt is Sodium-Chloride (made of Chlorine and Sodium)
Acrylic is man made. It is not something that is found in nature. Example of natural products would be cotton or wool.
Rubber is a natural material derived from the latex of certain plants, such as the rubber tree. However, synthetic rubber is also made in a chemical process using petroleum byproducts. So, rubber can be both man-made and natural.
Silver nitrate is a man-made chemical compound. It is synthesized by reacting silver with nitric acid.
Sodium hydroxide, also known as lye or caustic soda, is a man-made chemical compound. It is produced through the chemical process of electrolysis of salt water or sodium chloride.