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Molecular Shapes

Molecular Shapes . Quiz Review. The Rules . Form your own groups. Rotate who answers each question. Each group will get points for participation. All answers should be written down and not shouted out. The winning group will receive 5 homework points. Admit Slip/Warm Up.

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Molecular Shapes

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  1. Molecular Shapes Quiz Review

  2. The Rules Form your own groups. Rotate who answers each question. Each group will get points for participation. All answers should be written down and not shouted out. The winning group will receive 5 homework points.

  3. Admit Slip/Warm Up Which table can name the 6 molecular shapes the fastest?

  4. 200 What are the names of the regions around atoms where the electrons reside?

  5. 200 What are the names of the two types of electron domains?

  6. 400 Why aren’t molecules flat and with all bonding angles at 90º?

  7. 800 Draw the Lewis Dot structure of NH3. a) How many bonds does nitrogen have? b) How many lone pairs does nitrogen have? c) How many electron domains does nitrogen have?

  8. 200 Most of the molecular shapes we’ve learned have an underlying tetrahedral shape because the central atom has _____ electron domains.

  9. 200 Trigonal planar, on the other hand, is a shape caused when the central atom has ____ electron domains.

  10. 200 The central atom in the linear moleculeHCNhas only ____ electron domains.

  11. 400 The molecule H2O has which shape? a) tetrahedral b) pyramidal c) bent d) linear e) trigonal planar

  12. 400 The molecule methane, CH4 has which shape? a) tetrahedral b) pyramidal c) bent d) linear e) trigonal planar

  13. 400 The atom neon, Ne has which shape? a) tetrahedral b) pyramidal c) bent d) point e) linear

  14. 400 The molecule NH3 has which shape? a) tetrahedral b) pyramidal c) bent d) linear e) trigonal planar

  15. 600 Draw the following molecules as Lewis Dot structures and then identify the shape. CF4

  16. 600 Draw the following molecules as Lewis Dot structures and then identify the shape. H2S

  17. 600 Draw the following molecules as Lewis Dot structures and then identify the shape. CH2Br2

  18. 600 Draw the following molecules as Lewis Dot structures and then identify the shape. CH2O

  19. 600 Draw the following molecules as Lewis Dot structures and then identify the shape. CO2

  20. 800 Draw the following molecules as Lewis Dot structures and then identify the shape. CH3NH2 Shape on C: Shape on N:

  21. 400 Carbon (C) reacts with bromine (Br) to form carbon tetrabromide (CBr4). a. Draw the Lewis dot structures for carbon (C) and bromine (Br) individually.

  22. 400 b. Draw the Lewis dot structure for carbon tetrabromide (CBr4).

  23. 400 c. Identify the shape of the CBr4 molecule as predicted by valence-shell electron-pair repulsion (VSEPR) theory and explain why CBr4 has this shape.

  24. Final Jeopardy The total amount of points possible is: 8800

  25. Final Jeopardy Draw the Lewis Dot Structure for: CH2S What shape is this molecule and why?

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