Identify each of the phase changes described below.
Liquid gold is poured into molds and cools to become solid bars. The gold is
Liquid nitrogen becomes a gas when it is poured out of its container. The nitrogen is
Solid iron is heated to high temperatures so that it becomes a liquid. The iron is
Water vapor in the air becomes tiny liquid droplets that form fog. The water is
In a very cold cryogenic freezer, solid oxygen forms on the walls from the oxygen gas in the air. The
oxygen is
In the high desert, snow changes to water vapor without becoming liquid water. The snow is