Ch 2 - Atoms, Molecules, & Ions

Required Reading: Ch 1 & Ch 2Quiz: Ch 1, 2, 18.1, & 18.3 WED -

MON : 09/ 08Tentative Exam I WED

( 1, 2, 3, 18.1, 18.3)Ch

Suggested Problems

• Chapter 1

• pp 32 – 35 (all odds)

• Chapter 2

• pp 70 – 74 (all odds)

• No, I don’t expect anyone to do every one of these problems!!!

Atomic Structure• Dalton’s Atomic Theory

• Each element is made up of tiny particles.

• The atoms of a given element are identical; the atoms of different elements are different in some fundamental way or ways.

• Chemical compounds are formed when atoms of different elements combine with each other. A given compound always has the same relative numbers and types of atoms.

• Chemical reactions involve reorganization of the atoms - changes in the way they are bound together. The atoms themselves are not changed in a chemical reaction.

Atomic Structure

• J.J. Thomson’s Cathode-ray Tube Experiment

Atomic Structure

• J.J. Thomson’s Plum Pudding Model

Atomic Structure

• Millikan’s Oil Drop Experiment

Atomic Structure

• Rutherford’s Gold-foil Experiment

Atomic Structure

• Comparing Expected & Actual Results

Isotopes

• Isotopic notation

Molecules

• Structural formulas

• Space-filling model

• Ball-and-stick model

Ions

• Cations

• Anions

• Ionic bonding

Periodic Table

• Periods (series)

• Groups (families)

• Metals, Nonmetals, Metalloids

Naming Simple Compounds

• CsF

• AlCl3

• LiH

• Potassium iodide

• Calcium oxide

• Gallium bromide

Naming Simple Compounds

• CuCl

• HgO

• Fe2O3

• Manganese(IV) oxide

• Lead(II) chloride

Naming Simple Compounds

• Na2SO4

• KH2PO4

• Fe(NO3)3

• Sodium hydrogen carbonate

• Cesium perchlorate

• Sodium hypochlorite

Naming Simple Compounds

• PCl5

• PCl3

• SO2

• Sulfur hexafluoride

• Sulfur trioxide

• Carbon dioxide

Naming Simple Compounds

• HCl

• HClO4

• HClO3

• HClO2

• HClO

Naming Simple Compounds

• Practice Problems