The question doesn't make a lot of sense, but determining the percentage of gold (or anything else) in something would generally be thought of as analytical chemistry or possibly inorganic chemistry.
Alchemy was the branch of science that preceded chemistry. Alchemy focused on transforming base metals into gold, finding the elixir of life, and achieving spiritual enlightenment. It laid the groundwork for the development of modern chemistry.
Chemistry
The branch of science that deals with molecules changing into other molecules is chemistry.
The branch of science that studies chemicals is chemistry. Chemistry focuses on the composition, properties, and reactions of substances at the molecular level. It plays a crucial role in understanding the physical world and developing new materials and technologies.
Organic chemistry focuses on the study of carbon-containing compounds. It deals with the structure, properties, composition, reactions, and synthesis of organic compounds. Organic chemistry is central to the understanding of many natural processes and the development of pharmaceuticals, materials, and other important substances.
Alchemy was the branch of science that preceded chemistry. Alchemy focused on transforming base metals into gold, finding the elixir of life, and achieving spiritual enlightenment. It laid the groundwork for the development of modern chemistry.
This branch of chemistry is called analytical chemistry.
Chemistry
This branch is called organic chemistry.
Chemistry and physics are both branches of natural sciences.
This branch of chemistry is called electrochemistry.
organic chemistry, the chemistry of carbon based material
Organic chemistry (and of course biochemistry) is the branch involving carbon based molecules.
Chemists specialized in this branch of chemistry.
This is inorganic chemistry.
This is the branch of science called chemistry. Generally the chemistry of carbon compounds is the concern of organic chemistry.
Pharmaceutical chemistry