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CHEM 131 Chapter 2: Atoms and Elements: Foundations of Modern Atomic Theory

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Law of Conservation of Mass

  • Guided course
    Law of Conservation of Mass Example
    01:20
  • Guided course
    Law of Conservation of Mass
    01:48

Law of Definite Proportions

  • Guided course
    Law of Definite Proportions Example
    1:59
  • Guided course
    Law of Definite Proportions Example
    2:23
  • Guided course
    Law of Definite Proportions
    02:48

Law of Multiple Proportions

  • Guided course
    Law of Multiple Proportions
    03:32

Atomic Theory

  • Guided course
    Dalton's Atomic Theory
    05:22
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    Dalton's Atomic Theory Example
    01:48

The Atom

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    The Nucleus
    02:53
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    Atom Structure
    02:10
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    Atom Structure Example
    02:52

Subatomic Particles

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    Subatomic Particles
    05:19
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    Atomic Mass Unit Example
    03:31

Isotopes

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    Isotopes
    04:36
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    Isotope Notation Example
    03:57

Ions

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    Ion Formation
    06:17
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    Cation Subatomic Particles Example
    02:22
  • Guided course
    Atoms vs. Ions
    01:36

Atomic Mass

  • Guided course
    Calculating Abundance Example
    5:42
  • Guided course
    Greatest Atomic Mass Example
    02:06
  • Guided course
    Calculating Atomic Mass
    00:40

Measuring Radioactivity

  • Guided course
    Units of Radiation Measurement
    02:52
  • Guided course
    Radiation Measurement Units Conversion Example
    00:33

Periodic Table: Classifications

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    Nonmetal Properties
    01:12
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    Periodic Table Classifications
    02:40
  • Guided course
    Metalloid Properties
    03:37

Periodic Table: Group Names

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    Periodic Table: Group Names
    05:33
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    Periodic Table: Group Names Example
    01:17

Periodic Table: Representative Elements & Transition Metals

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    Transition Metal Example
    01:23
  • Guided course
    Transition Metals and Representative Elements
    03:30

Periodic Table: Element Symbols

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    Periodic Table History
    04:01
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    Halogen Example
    01:01

Periodic Table: Elemental Forms

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    Elemental Forms of Elements
    02:35
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    Chalcogen Identification Example
    01:15
  • Guided course
    Homonuclear vs. Heteronuclear Compounds
    01:21

Mole Concept

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    Moles and Particles Conversion
    02:41
  • Guided course
    Moles to Molecules Conversion Example
    01:41
  • Guided course
    Formula Unit Example
    01:28

Calculating Molar Mass

  • Guided course
    Molar Mass Concept
    02:11
  • Guided course
    Molar Mass Calculation Example
    03:12