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15 Cards in this Set
- Front
- Back
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nomenclature
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assignment of a correct and unambiguous name to each and every chemical compound.
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two naming systems
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ionic and covalent compounds
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characteristics of ionic compounds
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between metal and nonmetal
electron transfer to achieve noble gas config. crystal lattice structure formula units charges cancel electronegativity= >1.9 |
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characteristics of covalent compounds
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share electrons
diatomic elements bond two nonmetals polar covalent bond create molecules |
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formula
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the representation of the fundamental compound using chemical symbols and numerical scripts.
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what is the ordering of cations and anions in a chemical formula
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cations are written first, anions second
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cations and anions must combine to...?
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give a net charge of 0
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what is the naming convention of cations and anions?
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cations retain the name of the element, anions add the suffix "-ide"
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what are roman numerals in a formula?
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roman numerals give the charge of a metal if the cation has several ions of different charges.
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what is the naming convention of charges in ions?
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"-ic" is used to indicate the higher of the charges, and "-ous" is used for the lower.
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what are 3 common ions that have different charges and their names?
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Fe: ferrous (+2), ferric (+3)
Cu: cupprous (+1), cuppric (+2) Sn: stonnous (+2), stonnic (+4) |
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monatomic ions
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ions consisting of a single charged ion
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polyatomic ions
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ions composed of 2 or more atoms bonded together with an overall positive or negative charge.
Within the ion itself, atoms are bonded with ionic bonds. Positive and negative ions are bonded with ionic bonds. |
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Stock and common names
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only compounds with 2 possible charges have both a stock and common name.
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naming covalent compounds
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1. names of elements are written in the order they appear in the formula
2. the prefix indicates the number of each kind of atom. 3. if only one atom of a particular element is present in the molecule, the prefix "mono" is omitted. |
