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Periodic Table

Periodic Table. Organization and Trends. Periodic Trends. If you look at the Periodic Table, you will notice several trends… take a look at it now (pg. 172 in your text) and see if you can notice any. Color-coded to show similar elements. Alkali metals Ex: Sodium (Na)

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Periodic Table

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  1. Periodic Table Organization and Trends

  2. Periodic Trends • If you look at the Periodic Table, you will notice several trends… take a look at it now (pg. 172 in your text) and see if you can notice any

  3. Color-coded to show similar elements • Alkali metals Ex: Sodium (Na) • Shiny, soft, silvery, highly reactive metals • Alkaline earth metals Ex: Calcium (Ca) • Shiny, silvery-white, somewhat reactive metals • Transition metals Ex: Copper (Cu) • Hard, high BP and MP, barely reactive metals • Halogens Ex: Flourine (F) • Highly reactive non-metals • Noble gases Ex: Helium (He) • Odorless, colorless, very non-reactive non-metals

  4. Atomic number increases LR, top to bottom

  5. Periods are the rows of elements Period 1 Period 2 Period 3 Period 4 Period 5 Period 6 Period 7

  6. Groups are the columns that go top bottom Group 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

  7. Metals and Non-Metals • The metals (and transition metals) are separated from the non-metals by a thick jagged line on the periodic table

  8. Metal elements decrease in reactivity from LR; Non-metals increase in reactivity from LR Less Reactive  Most Reactive R  LR (Halogens are very non-reactive, and are not shown here) Most Reactive  Least Reactive | Least  Most Reactive Reactive

  9. Organization Summary • Elements are listed by their atomic number from 1 – 118 from LEFT to RIGHT, top to bottom • PERIODS = the rows that go from LR • Group/ Family = the columns that go from TOP BOTTOM • Reactivity ranges from very reactive (L side) non-reactive (R side) for both metals and non-metals

  10. Element’s state of matter • Elements can exist in various states of matter (solid, liquid, gas) • Elements with their atomic mass written with brackets indicates a synthetic element • To see an interactive map that shows all these concepts, so to: http://www.chemicool.com

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