Dry ice
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Dry ice is the solid form of carbon dioxide. It is commonly used for temporary refrigeration as CO2 does not have a liquid state at normal atmospheric pressure and sublimes directly from the solid sta
Subliming dry ice pellet, with white frost on the surface
Dry ice being used to cool beverages in Central Park, New York
Sublimation
Dry ice in water
Liquid
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Liquid is a state of matter with a definite volume but no fixed shape. When confined in a container and subjected to a force such as gravity, liquids will adapt to the internal shape of the container
The formation of a spherical droplet of liquid water minimizes the surface area, which is the natural result of surface tension in liquids.
Cavitation in water from a boat propeller
Surface waves in water
A lava lamp contains two immiscible liquids (a molten wax and a watery solution) which add movement due to convection. In addition to the top surface, surfaces also form between the liquids, requiring a tension breaker to recombine the wax droplets at the bottom.