reactivity
n.the ability of a substance to react with another substance to create a new one. It describes how quickly or easily a chemical change happens.
n.the tendency of a substance to undergo a chemical reaction with another substance. Often used to describe the sensitivity of a material to external stimuli such as heat, light, or pressure.
“The reactivity of the metal increases when it is exposed to air.”
“Chemists carefully measure the reactivity of different compounds to ensure the reaction remains controlled and safe.”
“The high reactivity of the alkali metals necessitates their storage in an inert atmosphere to prevent spontaneous combustion upon contact with moisture.”
“The function, reactivity and stability of bio-based hybrid materials can depend strongly on the chemical environments present at their surfaces and interfaces.”
From reactive + -ity.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.