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