Solids are defined as substances that retain their shape, even when they are not confined. Substances usually assume the solid state of being at lower temperatures than they do when they are liquids, gases or plasmas. More »

A solid is scientifically defined as having structural rigidity and particles arranged with a relatively stable shape and a relatively stable volume. Unlike other states of matter, solids do not expand to take on the sha... More »

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An irregular solid is defined as a three-dimensional solid object that does not have an normal shape, such as a sphere, cube or pyramid. Irregular solids have many sides of differing lengths. More »

Purdue University's Department of Chemistry defines "liquid" as a state of matter that flows, can change its shape, is not easily compressible and maintains a relatively fixed volume. Liquid is one of the four primary st... More »

An irregular solid is defined as a three-dimensional solid object that does not have an normal shape, such as a sphere, cube or pyramid. Irregular solids have many sides of differing lengths. More »

According to the U.S. Geological Survey Water Science School, water is considered the universal solvent because it dissolves more substances that any other liquid. Because of water’s chemical properties, where one side (... More »

Ideal gases are hypothetical substances studied by scientists and students to simplify intermolecular forces. Ideal gases are point masses that constantly move in a random, straight-line nature. The behavior of ideal gas... More »