elements, compounds and naming binary ionic compounds ch.2
TRANSCRIPT
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Elements, compounds and naming binary ionic compounds
Ch.2
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Organization of the periodic table
groups/families– Similar properties
periods
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labels of groups or families
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Names of groups/families
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Metals, nonmetals and metalloids
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Compounds!-combos of elements
Diatomics (7) -elements that don’t appear as a single atom in nature– H, N, O, F, Cl, Br, I
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Two main types of compounds
Ionic (m/nm): aka salts…electrons are completely transferred
Covalent (nm/nm): aka molecular… electrons are shared
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Naming compounds-
Ionic compounds (metal + nonmetal) Metal= cation (+ charge) Nonmetal=anion (- charge) cation gives electron anion gets
electron
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Common charges from periodic table Page 64!!!
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Chemical formulas
Charges in ionic compounds = 0 You can predict the chemical formula from
charges EX) aluminum and sulfur form a compound
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Try it
Calcium and Bromine Sodium and chlorine
Answers CaBr2
NaCl
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Naming binary salts (simple ionic compounds) Cation then anion Cation= name of element Anion= root of element and -ide See page 64 for special rules Ex) NaCl and CrI3
Sodium chloride and chromium (III) iodide
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Try it
SnF2
Mg3N2
Fe2 O3
Cs2S
Answers Tin (II) Fluoride Magnesium Nitride Iron (III) oxide Cesium sulfide
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Extra practice
62 and 63
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homework
pg76 #61-64 memorize: name and symbol
NCS1-, C2H3O21-, MnO4
1-,
NH41+, C2O4
2-, CN1-, OH1-, S2O32-, S2O8
2
CrO42-, Cr2O7
2-, O21-