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11 Cards in this Set
- Front
- Back
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element
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a substance that cannot be broken down into simpler substances by chemical or physical means. Found in the Periodic Table of the Elements
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Atomic number
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the number of protons in the nucleus of an atom/
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energy level
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where electrons are located
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isotope
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atoms with the same number of protons but different numbers of neutrons.
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mass number
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the total mas of the atom expressed in atomic mass units.
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compound
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a substance that consists of two or more elements that are chemically combined in specific proportions.
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Chemical bond
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the forces that fold atone together in a compound.
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ion
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an atom that has an electrical charge because of a gain or loss of one or more electrons.
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ionic bond
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form between positive and negative ions.
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covalent bond
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form when atoms share electrons.
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metallic bond
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form when electrons are shared by metal ions.
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