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Question of the Day

Question of the Day. Day 5 2-19. Use your colored periodic table : Where are the alkaline earth metals on the periodic table? Neon is a __________. The elements in the middle of the periodic table (or the d-block are called the _________________. noble gas. transition metals.

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Question of the Day

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  1. Question of the Day Day 5 2-19 • Use your colored periodic table: • Where are the alkaline earth metals on the periodic table? • Neon is a __________. • The elements in the middle of the periodic table (or the d-block are called the _________________. noble gas transition metals

  2. Objective / Essential Question How is the periodic table arranged?

  3. noble gases alkali metals halogens alkaline metals transition metals

  4. Metals Excellent conductors (Sea of electrons) even as solidsMobile electronsMetals are malleable and ductile Can be pulled into wire Can be pounded into sheet

  5. Can you figure out how reactivity changes on the periodic table? Notes page 3!!!

  6. Homework Read / review Section 6.2 and complete #s 11-17 on page 173

  7. Q of the Day Day 6 2-20 • Most reactive metals = the _______ metals. • Least reactive metals = _________. • Most reactive nonmetals = ________. alkali transition Use notes if needed. halogens

  8. Q of the Day Day 6 2-20 • Elements with the same # of valence are in the same _______ on the periodic table. • alkali metals = __ valence • alkaline earth metals = __ valence • halogens = __ valence • noble gases = __ valence • We are taking an ATB quiz on today’s ATBs in 5 minutes. Use notes and/or colored periodic table if needed.

  9. Periodic Trends Atomic radius: - Measure of size – radius of an atom - Atoms with more electrons do NOT necessarily have a larger atomic radius

  10. Periodic Trends - Atoms with more electrons do NOT necessarily have a larger atomic radius

  11. Periodic Trends - Atoms with more electrons do NOT necessarily have a larger atomic radius • Atoms get larger going down a group. • Atoms get smaller going across a period • So why?...

  12. Periodic Trends - Atoms with more electrons do NOT necessarily have a larger atomic radius As you move down a group you increase the number of energy levels in the atom and so the atom gets larger as expected.

  13. Periodic Trends As you move across a period, # of protons increases and outermost energy level stays the same, the attractive force between elecs. and pros. pulls the atom tighter (closer to nucleus) - Atoms with more electrons do NOT necessarily have a larger atomic radius

  14. Periodic Trends What’s bigger: B or Al B or N N or Zn C or Cl

  15. Homework Read / review Section 6.2 and complete #s 11-17 on page 173

  16. Q of the Day Day 1 2-21 • Which halogen is found in period 2? • How many valence electrons does calcium have? • Why does the size of an atom increase moving down a group?

  17. Green = ? Blue = ? Red = ?

  18. Inert elements = ? Good Conductors = ?

  19. Review • What element is in Group 2, Period 3? • Name an element in Group 3 • How many valence electrons in Xe? • Give me an element with 1 valence electron.

  20. Partner Review • What element is in Group 17, Period 3? • What family of elements is the element above in? • How many valence electrons does it have?

  21. Periodic Trends Notes page 4 • What are ions? • - atoms that are charged due to the loss or gain of electrons • If an atom loses elecs. it becomes smaller and positive • If an atom gains elecs. it becomes larger and negative

  22. Periodic Trends • What are ions? • - If an atom loses elecs. it becomes smaller • If an atom gains elecs. it becomes larger PAGE 176-179 Which elements gain elecs.? Which elements lose elecs.? Pattern?

  23. Periodic Trends Elements on the right side of the periodic table form _________ ions Elements in the same group form ___________ ions negative The same

  24. Periodic Trends What’s bigger: F or F- Na or Na+ Na or Rb Na of Al F or Cl-

  25. ATB Quiz Day 6 2-20 • Most reactive metals = the ____________ metals. • Elements with the same # of valence are in the same ___________ on the periodic table. • Halogens = _____ valence.

  26. ATB Quiz Day 6 2-20 • Most reactive nonmetals = the _________. • Elements with the same # of valence are in the same ___________ on the periodic table. • Alkali metals = _____ valence.

  27. ATB Quiz Day 6 2-20 • Least reactive metals = the ____________ metals. • Elements with the same # of valence are in the same ___________ on the periodic table. • Alkaline earth metals = _____ valence.

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