"Held constant", "kept constant", "maintained the same...", are a few ideas.
This is a solid.
"Static" is a term usually applied to characters and means unchanging or constant.
The term you are looking for is "stability." Stability refers to the quality of being firmly established, constant, or unchanging.
The chemical term is solute.
The duration of The Unchanging Sea is 840.0 seconds.
Your Unchanging Love was created on 1967-06-13.
The Unchanging Sea was created on 1910-05-05.
mole- a chemical term.
dihydrogen monoxide
Chemotherapy is the medical term meaning chemical treatment.
Cholesterol is a medical and chemical term.
Another term for a chemical change is a chemical reaction.