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Elements and Compounds

Elements and Compounds . Outline Elements and Symbols The Periodic Table Compounds and Formulas Molecules and Ionic Compounds Law of Definite Proportions Law of Multiple Proportions. Chapter 3. What symbols did Dalton want to use for the elements? .

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Elements and Compounds

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  1. Elements and Compounds • Outline • Elements and Symbols • The Periodic Table • Compounds and Formulas • Molecules and Ionic Compounds • Law of Definite Proportions • Law of Multiple Proportions Chapter 3

  2. What symbols did Dalton want to use for the elements?

  3. Why don’t all symbols match their name?

  4. What elements do you need to know?

  5. Distribution of the common elements in nature. 3.2

  6. Elemental Composition of Humans (by mass)

  7. Expanded Periodic Table

  8. How do molecular and ionic compounds differ? Propane – contains individual C3H8 molecules Table salt – contains an array of Na+ ions and Cl- ions

  9. Chemical Formulas • AxByCz Elemental Symbol Number of atoms

  10. Example - Law of Definite Proportions

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