This type of chemical thermodynamic equilibrium persists indefinitely unless the system is changed. Chemical systems might include changes in the phase of matter or a set of chemical reactions. Chemical substances or states can persist indefinitely even though they are not in their lowest energy state if they experience metastability, a state which is stable only if not disturbed too much.
A substance or state might also be termed "kinetically persistent" if it is changing relatively slowly. Metastable and kinetically persistent species or systems are not considered truly stable in chemistry. Subscribe to our newsletter to get expert advice and top insights on corrosion science, mitigation and prevention.
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Esters, for instance, may be perfectly 'stable' if left out in a vial, but incredibly unstable if stirred in a flask with some aqueous base. Stability should, therefore, always be qualified, for instance thermodynamic stability and kinetic stability are both terms often considered by chemists. Add a comment. Active Oldest Votes. Improve this answer. ShankRam ShankRam 1, 1 1 gold badge 7 7 silver badges 17 17 bronze badges.
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For example, the most common isotope of carbon, carbon 12, is stable. Protons and photons are examples of stable subatomic particles. Not easily decomposed or otherwise modified chemically. Relatively unchanging, permanent; firmly fixed or established; consistent ; not easily moved, altered, or destroyed. He was in a stable relationship. A stable government. To put or keep horse in a stable. Not showing or marked by erratic or volatile emotions or behavior. The definition of stable is something steady that is not prone to change, someone who is level headed and who isn't subject to wild swings of emotion.
Relating to an atom or chemical element that is unlikely to share electrons with another atom or element. A group, as of athletes or entertainers, under common management. To put or keep in a stable. Not likely to change or be affected adversely; lasting; enduring. Capable of returning to equilibrium or original position after having been displaced.
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