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Chapter 2

Chapter 2. Law of Conservation of Mass Law of Definite Proportions Law of Multiple Proportions. Dalton’s Atomic Theory Small atoms Identical Atoms go together to make compounds Reactions reorganize atoms Avogadro’s hypothesis Equal volumes contain equal moles. Early atom Thomson CRT

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Chapter 2

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  1. Chapter 2 • Law of Conservation of Mass • Law of Definite Proportions • Law of Multiple Proportions

  2. Dalton’s Atomic Theory • Small atoms • Identical • Atoms go together to make compounds • Reactions reorganize atoms • Avogadro’s hypothesis • Equal volumes contain equal moles

  3. Early atom • Thomson • CRT • Electron • Proton • Millikan • Radioactivity

  4. Rutherford • Gold Foil Experiment • Nuclear model

  5. Modern atomic model • Electron, Proton, Neutron • Isotopes • Atomic symbol • Molecules and Ions • Polyatomic ions

  6. Periodic Table • Layout • Families to remember • Nomenclature • Binary Ionics • Type 1 NaCl, MgF2, (NH4)2S • Type 2 FeO, Fe2O3, AuS

  7. Polyatomic Ions • X = Family 17 • XO4- = per _ ate • XO3- = _ ate • XO2- = _ ite • XO- = hypo _ ite • Sulfate family • SO42- _ate • SO32- _ ite

  8. Phospate family • PO43- _ ate • PO33- _ ite • Others • CN - OH - NO3- NO2- • MnO4 - CrO4 2- Cr2O7 2- • CO3 2- C2O4 2- C2H3O2 - • NCS- O2 2- NH4+ Hg22+

  9. Binary Covalents • 1 mono • 2 di • 3 tri • 4 tetra • 5 penta • 6 hexa • 7 hepta • 8 octa • 9 nona • 10 deca • CO2, SO3, N2S4

  10. Acids • Without oxygen • Hydro_ic acid • HCl – hydrochloric acid • With oxygen • No hydro and if the polyatomic ends in ate change to ic if ite change to ous • HClO3 chloric acid • H2SO3 sulfurous acid or sulfous acid

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