im pretty sure its C16H203N2 IM PRETTY SURE
Melanin is the darkening chemical in skin that determines skin color. Melanin is produced by specialized cells called melanocytes and is responsible for protecting the skin from UV radiation damage. The amount of melanin produced by the melanocytes determines an individual's skin color.
Bleaching skin is a chemical change because it involves a reaction with the skin's melanin pigment that alters its chemical structure to appear lighter in color.
The chemical makeup of H2SO4 is two hydrogen (H) atoms, one sulfur (S) atom, and four oxygen (O) atoms.
Eye color is a physical change, not a chemical change. Eye color is determined by the amount and distribution of melanin in the iris, which is a physical characteristic that can change over time but does not involve any chemical reactions.
It is not obvious from your question whether you are asking for a term which describes solid materials having a definite chemical makeup - which would be a chemical or a substance, although those terms would apply equally well to liquid or gas materials having a definite chemical makeup - or whether you are asking for examples, which would include such things as ice, marble, table salt, steel, copper, etc.
melanin and carotene Carotene Melanin The chemical is called melanin.
Melanin is not a sweat gland. Is is the chemical that provides skin color.
melanin
This substance is called melanin.
Matter with a definite chemical makeup is a pure substance.
Our skin contains melanin. Melanin is a chemical that gets darker due to UV rays. Our hair on the other hand, contains no melanin.
Melanin is the darkening chemical in skin that determines skin color. Melanin is produced by specialized cells called melanocytes and is responsible for protecting the skin from UV radiation damage. The amount of melanin produced by the melanocytes determines an individual's skin color.
melanin
a spectroscope is the instrument used to determine the chemical makeup of a star.
a chemical formula
The chemical formula is N34K4Na9
The amount of the pigment/chemical 'melanin' that is in your skin. Sorry, I don't know much about it, so try googling melanin.