![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/7/71/IceBlockNearJoekullsarlon.jpg/640px-IceBlockNearJoekullsarlon.jpg&w=640&q=50)
Is
frossent vand / From Wikipedia, the free encyclopedia
Is af vand, også kaldet vandis, er vands faste tilstandsform.
For alternative betydninger, se IS.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/7/71/IceBlockNearJoekullsarlon.jpg/640px-IceBlockNearJoekullsarlon.jpg)
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Feather_ice_Alta_plateau_Norway_2006_C_Thom.jpg/320px-Feather_ice_Alta_plateau_Norway_2006_C_Thom.jpg)
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/e/e7/Is_vid_inloppet_till_Ystads_hamn_15_feb_2021.jpg/640px-Is_vid_inloppet_till_Ystads_hamn_15_feb_2021.jpg)
Andre væsker (og luftarter) i fast tilstand siges dog også at danne is.[kilde mangler] Udtrykket "tøris" anvendes om kuldioxids faste form.