Gas
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Gas is a state of matter with neither fixed volume nor fixed shape. It is a compressible form of fluid, in contrast to a liquid. A pure gas consists of individual atoms, or molecules. Pure gases can a
Suspended particulates indicate the movement of the surrounding gas.
Shuttle imagery of re-entry phase
21 April 1990 eruption of Mount Redoubt, Alaska, illustrating real gases not in thermodynamic equilibrium.
Boyle's equipment
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 subject to a force such as gravity, liquids will adapt to the internal shape of the container in
Gas
…Gas is a state of matter with neither fixed volume nor fixed shape. It is a compressible form of fluid, in contrast to a liquid. A pure gas consists of individual atoms (e.g. a noble gas like neon), or molecules (e.g. oxygen (O2) or carbon dioxide). Pure gases can also be mixed…
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.