Cryochemistry
![When cooled below the Lambda point (2.17 K or −270.98 °C at 1 atm), liquid helium exhibits properties of superfluidity](/Images/godic/202501/07/2_Helium0711.png")
Cryochemistry is the study of chemical interactions at temperatures below −150 °C (−238 °F; 123 K). It is derived from the Greek word cryos, meaning 'cold'. It overlaps with many other sciences, including chemistry, cryobiology, condensed matter physics, and even astrochemistry.