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-