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23 Cards in this Set
- Front
- Back
1.atom
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the smallest unit of an element
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2.chemical bond
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an attractive force that holds atoms together in a compound
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3.chemical change
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produces new substances with new properties
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4.chemical energy
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The change in the internal potential energy due to a chemical reation
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5.chemical equation
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–a shorthand way of describing a chemical reaction
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6.chemical reaction
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– the process of chemical change in which different chemical substances are
created by forming or breaking chemical bonds |
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7.compound
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combinations of two or more elements that can be broken down into simpler
substances by a chemical reaction |
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8.covalent bond
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chemical bond formed when ions are shared
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9.covalent compound
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– molecular compound composed of electrically neutral bound together by
the sharing of electrons |
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10.double bond
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covalent bond formed when two pairs of electrons are shared
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11.electronegativity
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the electron-pulling ability of an atom in a bond
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12.element
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basic substances that cannot be broken down into anything simpler
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13.formula
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using symbols to tell what elements are in a compound and in what proportions
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14.ionic bond
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chemical bonds that are formed when atoms transfer electrons to become ions
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15.ionic compounds
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substances containing ionic bonds that form crystalline structures
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16.molecule
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the smallest unit of a compound, or a gaseous element, that can exist and still retain
the characteristic properties of a substance |
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17.octet rule
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atoms gain or lose electrons to acquire the noble gas structure of eight electrons in
the outer orbital |
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18.polar covalent bond
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covalent bond in which the electrons are shared unequally
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19.products
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new substances produced from a chemical reaction; written on the right side of an
equation |
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20.reactants
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substances that are changed in a chemical reaction; written on the left side of an
equation |
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21.single bond
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covalent bond formed when only one pair of electrons are shared
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22.triple bond
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covalent bond formed when three pairs of electrons are shared
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23.valence electrons
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the electrons in the outermost orbital of an atom
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