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21 Cards in this Set
- Front
- Back
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Bond
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2 combined elements
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Isotope
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atoms of the same element that contain deifferent numbers of neutrons
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Atomic Mass
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total mass of an atom
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Valence Electron
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outermost electrons
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Lewis-dot Diagram
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notation that represents valence electrons of an atom
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Non-bonding pairs
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electron pairs in a Lewis-Dot structure
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Ion
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any atom that has a net electric charge
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Octet Rule
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there are 8 electrons in the 2nd and 3rd shells
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Atom
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smallest component of an element
has nucleus, protons, and neutrons |
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Compound
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pure substance consisting of 2 or more elements
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Ionic Bond
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Bond between 2 ions formed through the transfer of electrons
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Coefficient
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number that's constant for a substance
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Synthesis Reaction
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where an element is broken down
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Replacement Reaction
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where one element replaces another
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Exothermic Reaction
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when heat is released and the element becomes cool
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Reaction
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change where a substance decomposes, combines, or interchanges constituents in a subsance
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Formula
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expression of the constituents of a compound by symbols or figures
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Covalent Bond
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bond formed by sharing of a pair of electrons
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Subscript
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character of symbol written beneath the side of another character
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Decomposition Reaction
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separation of a substance into 2 or more substances
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Endothermic Reaction
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chemical reaction by absorbing heat
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