Unit 2, Lesson 2: Classifying Matter

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Unit 2, Lesson 2: Classifying Matter

A Few More Definitions... Atom: the smallest possible unit of an element that retains the fundamental properties of the element. Molecule: a cluster of two or more atoms held together strongly by electrical forces. Ion: an atom or molecule that possesses an electrical charge. Particle: a general term used to describe a small bit of matter such as an atom, molecule, or ion.

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