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Periodic Table

Periodic Table. Groups and Periods. Groups = The vertical columns on the periodic table There are 18 of them Group 18 is called the “NOBLE GASES” Also called the “Inert Gases”. Group Names. Alkali Metals (Group 1) Alkaline Earth Metals (Group 2) Transition Metals (Groups 3-12)

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Periodic Table

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  1. Periodic Table

  2. Groups and Periods • Groups = The vertical columns on the periodic table • There are 18 of them • Group 18 is called the “NOBLE GASES” • Also called the “Inert Gases”

  3. Group Names • Alkali Metals (Group 1) • Alkaline Earth Metals (Group 2) • Transition Metals (Groups 3-12) • Halogens (Group 17) • Noble Gasses (Group 18)

  4. Groups and Periods • Periods = The horizontal rows on the periodic table • There are 7 of them

  5. Lanthanides and Actinides

  6. Solids/Liquids/Gases • Every periodic table indicates whether an element is solid, liquid or gas at room temperature • Look for the legend (just like on a map)

  7. Metals/Nonmetals • Look at the “zig-zag” line • Left of it = Metals (with one exception) • Right of it = nonmetals

  8. Metalloids • Have properties of metals AND nonmetals • Right on the zig-zag

  9. Atomic Number • Atomic Number = The number of PROTONS in an atom • USUALLY Number of Protons = Number of Electrons

  10. Atomic Mass • Measured in “Atomic Mass Units” • AMUs • One Proton = 1 AMU • One Neutron = 1 AMU • One Electron = 0 AMU (so small it doesn’t matter)

  11. Finding How Many Neutrons • Atomic Number tells you how many protons • One proton = 1 AMU each • Round Atomic Mass to nearest whole number • Count how many AMUs you need

  12. Atomic Number = 8 Number of Protons = 8 Total AMUs so far = 8 AMU Atomic Mass = 16 AMU 8 AMUs of mass is needed 8 Neutrons complete it Neutrons

  13. Isotopes • Isotope = Same element, different number of neutrons • Same atomic number, same number of protons, same number of electrons

  14. Atomic Mass (again) • Isotopes explain why the atomic mass is a weird decimal number • Atomic mass is the AVERAGE of ALL ISOTOPES of that element

  15. What is the group number for Carbon? iRespond Question Multiple Choice F F A.) 1 B.) 2 C.) 13 D.) 14 E.)

  16. What is the period number for Magnesium? iRespond Question Multiple Choice F F A.) 1 B.) 2 C.) 3 D.) 4 E.)

  17. Where is Gold located on the periodic table? iRespond Question Multiple Choice F F A.) Period 6; Group 11 B.) Period 11; Group 6 C.) Period 5; Group 12 D.) E.)

  18. What is the atomic number for Lead? iRespond Question Multiple Choice F F A.) 80 B.) 82 C.) 84 D.) E.)

  19. How many neutrons are in one atom of lithium? iRespond Question Multiple Choice F F A.) 2 B.) 3 C.) 4 D.) E.)

  20. How many neutrons are in one atom of oxygen? iRespond Question Multiple Choice F F A.) 8 B.) 16 C.) 32 D.) E.)

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