The phase change from gas to liquid is called

it is referred to as condensation. this is when a liquid is going from a gas to a liquid due  to cooling
the opposit of this --turning a liquid to a gas-- is called vaporation when a liquid is heated up to the point it becomes steam

The phase change from a gas to a liquid is called condensation.

Atomicity occurs to prevent updates of the database occurring only partially, which can cause greater problems than rejecting the whole series outright.some are monatomic, diatomic, triatomic etc because it shows the number of atoms. for example, monatomic means it contains only one atom.