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Resources A 2 Flashcards pp. 103-106

Resources A 2 Flashcards pp. 103-106. H 2 O, NaCl, and CO 2 are correct formulas. Predict Rb & S ; Si & O. -Rb 2 S -SiO 2. How is the modern periodic table arranged?. By Atomic #. What happens to boiling and melting points as you go down a group?. There is NO Predictable pattern.

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Resources A 2 Flashcards pp. 103-106

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  1. Resources A 2 Flashcardspp. 103-106

  2. H2O, NaCl, and CO2 are correct formulas. Predict Rb & S ; Si & O

  3. -Rb2S -SiO2

  4. How is the modern periodic table arranged?

  5. By Atomic #

  6. What happens to boiling and melting points as you go down a group?

  7. There is NO Predictable pattern.

  8. What do elements in a group have in common?? Example??

  9. -Similar properties -ox.#’s are the same.

  10. What happens if you change: A) protons? B) electrons? C) neutrons?

  11. A) you get a different element. B) you get an ion (Na+ or Cl-) C) you get isotopes (U235 and U238)

  12. Describe periods and groups on the periodic table.

  13. Periods- run left to right or across the periodic table. Groups- run up and down

  14. Which group is the most reactive and least reactive?

  15. Most- IA/ Alkali metals Least- VIII/ Noble gases

  16. What elements are in period 1?

  17. -H and He

  18. List the common names for groups. IA- VII B- IIA- VIII-

  19. IA- alkali metals IIA- Alkaline earth metals VIIB- Halogens VIII- Noble gases

  20. What elements are in IIA?

  21. -Be Thru Ra

  22. If the B. pts of Li=100 and K=50 then Na would be…

  23. N= 75

  24. Give the trend for atomic radius.. -left to right -top to bottom?

  25. Left to right- decreases Top to bottom- increases

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