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Classifying Elements
Vocab
Term | Definition |
---|---|
proton | A particle in the space inside the nucleus of an atom that carries an unit of positive eclectic charge |
atomic number | The number of protons in a signal atom of an element |
electron | A particle in the space outside the nucleus of an atom that carries one unit of negative eclectic charge |
molecule | A particle that contains two or more atom joined together |
metals | A substance that conducts heat and electricity |
nonmetal | A group of elements that are poor conductors of heat and electricity |
noble gases | The nonmetallic elements helium, neon, argon, krypton, xenon, and radon |
metalloids | A small group of elements with some properties of both metals and nonmetals |
periodic table |