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Atoms, Molecules, and Ions. Atomic Theory and the Structure of the Atom.

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Presentation on theme: "Atoms, Molecules, and Ions. Atomic Theory and the Structure of the Atom."— Presentation transcript:

1 Atoms, Molecules, and Ions

2 Atomic Theory and the Structure of the Atom

3 All matter consists of very small, indivisible particles, which he named atomos Democritus Greek era

4 Lavoisier Law of conservation of mass

5 Proust Law of definite proportions

6 Dalton Law of multiple proportions and the first model of the atom

7 Concept Review The atoms of elements A (blue) and B (orange) form two compounds shown here. Do these compounds obey the law of multiple proportions?

8 Radiation

9 Cathode Ray Tube Battery Evacuated tube Cathode Anode −+

10 α β ϒ

11 J.J. Thomson Charge to mass ratio and the Plum-Pudding Model

12 R.A. Millikan Millikan Oil Drop

13 Rutherford Gold Foil Experiment

14 Bohr Planetary Model

15 Schrödinger Quantum Mechanical Model

16 Chadwick The Neutron

17 Atomic Symbols

18 Isotopes Hydrogen-1Hydrogen-2Hydrogen-3

19 The Periodic Table

20 Molecules Diatomic CO HCl

21 Molecules Polyatomic O3O3 H2OH2O NH 3 CO 2

22 Compound Molecular Compound HClCO H2OH2O NH 3 CO 2 Binary Molecular Compound

23 Compound Ionic Compound

24 MOLECULAR FORMULAEMPIRICAL FORMULA Chemical Formulas C 4 H 10 C2H5C2H5 Butane

25 Nomenclature Organic compounds

26 Nomenclature Inorganic compounds: Ionic Compounds NaCl sodium chloride Mn 2 O 3 manganese(III) oxide

27 Nomenclature Inorganic compounds: Binary Molecular Compounds NO 2 nitrogen dioxide N 2 O 4 dinitrogen tetraoxide Greek Prefixes

28 Nomenclature Summary

29 Nomenclature Inorganic compounds: Acids Anion: chloride Acid: hydrochloric acid Anion: chlorate Acid: chloric acid Anion: chlorite Acid: chlorous acid

30

31 Nomenclature Inorganic compounds: Bases *Named like ionic compounds; cation followed by anion with “–ide” NaOH Sodium Hydroxide Mg(OH) 2 Magnesium Hydroxide

32 Nomenclature Inorganic compounds: Hydrates CuSO 4  5H 2 O Ionic compound Greek prefix Hydrate Copper(II) sulfate pentahydrate


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