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Bookmark or Share- Matter - WikipediaMatter; Matter is usually classified into three classical states, with plasma sometimes added as a fourth state. From top to bottom: quartz (), water (), nitrogen dioxide (), and a plasma globe ().
- Matter | Definition of Matter by Merriam-Webster2 a: the substance of which a physical object is composed. b: material substance that occupies space, has mass, and is composed predominantly of atoms consisting of protons, neutrons, and electrons, that constitutes the observable universe, and that is interconvertible with energy. c: a material substance of a particular kind or for a particular purpose vegetable matter
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