adjective
intrinsic
in-TRIN-zik/ɪnˈtrɪnzɪk/
Belonging to the essential nature of something.
Magnetism is an intrinsic property of the magnet lifting the iron nails.

Etymology
“Within” and “alongside” combine in a Latin expression meaning “on the inside.” The sense shifted from inward or internal location to belonging to something’s essential nature.
In context
it's intrinsic to that substance because every time I measure out another milliliter of bromine I'm going to get another 3.12 grams
More examples
- Risk is an intrinsic part of starting a business.
- The program encourages learning for its intrinsic rewards.
- They believe every human life has intrinsic value.
Forms
intrinsically adverb — By virtue of its essential nature.