Chemistry Notes

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metal

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A substance with high electrical conductivity, luster, and malleability, which quickly loses electrons to form positive ions

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non metal

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Those that lack metal attributes. Mostly gases and sometimes liquids

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metalloids

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A chemical element that exhibits properties falling between those of typical metal and a typical non metal.

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Proton

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Subatomic particle with a POSITIVE electrical charge

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Neutron

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Subatomic particle with NO electrical charge

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electron

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a tiny, NEGATIVEly charged subatomic particle that orbits the nuclear of an atom

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nucleas

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Protons and Neutrons at the center of an atom.

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atomic mass

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The mass of a SINGLE atom The combined mass of the protons and neutrons in the nucleus.

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Atomic number

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The number of protons in a nucleus. ALWAYS equals the number of electrons in orbit around the nucleus.

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isotope

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A form of a chemical element in which the atoms have the SAME number of protons but with a different number of neutrons.