Editing Conservation law (section)

==Approximate laws==
{{Unreferenced section|date=August 2023}}
There are also '''approximate''' conservation laws.  These are approximately true in particular situations, such as low speeds, short time scales, or certain interactions.

* [[Mechanical energy#Conservation of mechanical energy|Conservation of mechanical energy]]
* [[Conservation of mass]] (approximately true for [[special relativity|nonrelativistic speeds]])
* Conservation of [[baryon number]] (See [[chiral anomaly]] and [[sphaleron]])
* Conservation of [[lepton number]] (In the [[Standard Model]])
* Conservation of [[flavour (particle physics)|flavor]] (violated by the [[weak interaction]])
* Conservation of [[strangeness]] (violated by the [[weak interaction]])
* Conservation of [[parity (physics)|space-parity]] (violated by the [[weak interaction]])
* Conservation of [[charge conjugation|charge-parity]] (violated by the [[weak interaction]])
* Conservation of [[T-symmetry|time-parity]] (violated by the [[weak interaction]])
* Conservation of [[CP symmetry|CP parity]] (violated by the [[weak interaction]]); in the Standard Model, this is equivalent to conservation of [[T-symmetry|time-parity]].