Freezing point, change from a fluid to a solid form by loss of heat, Deposition, conversion of a substance from the solid to the gaseous state without its becoming liquid, Vaporization, The transition in phase observed from the liquid phase to the gaseous state of liquid, Condensation, the process by which water vapor in the air is changed into liquid water, Gas, a fluid (such as air) that has neither independent shape nor volume but tends to expand indefinitely, Solid, the state of matter in which the atoms or molecules are locked rigidly in place by bonds or intermolecular forces, Matter, anything that takes up space and can be weighed, Plasma, an ionized gas consisting of positive ions and free electrons in proportions resulting in more or less no overall electric charge, Melting point, The temperature at which a solid, given sufficient heat, becomes a liquid., Aurora, One of the examples of plasma

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