Identify the phase transition occurring in each of
the following:

a) The water level in an aquarium tank falls continu-
ously (the tank has no leak).

b) A mixture of scrambled eggs placed in a cold vacuum
chamber slowly turns to a powdery solid.

c) Chlorine gas is passed into a very cold test tube where
it turns to a yellow liquid.

d) When carbon dioxide gas under pressure exits from a
small orifice, it turns to a white “snow.”

e) Molten lava from a volcano cools and turns to solid rock.