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CHEM1001-2020-Lab5-Worksheet.pdf
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CHEM 1001 – 2020, Laboratory #5 1

Name (First & Last): CHEM 1001, Fall 2020, Lab #5: Exploring Molecular Shapes

LAB ASSIGNMENT WORKSHEET This is what you will upload to Canvas, as a single PDF file, for your TA to grade.

• Before you get started, please make sure that this file is not opening in a browser and is saved to your computer (documents or desktop).

• If it is not easy for you to draw your Lewis Structures into the boxes, you may draw your Lewis Structures on blank paper and use an app like CamScan to upload the file with your worksheet. If you draw on paper, please make sure it is easy to read and organized.

Part 1: Building and Exploring Molecular Shapes This part of the laboratory will be completed in your laboratory, with a partner.

1) Use the directions Procedure File for your instructions. Only your answers will go into this worksheet file.

2) Complete Data Table #1, one row at a time. Data Table #1 – Lewis Structures, Molecular Geometry, and Polarity

Molecular Formula

Lewis Structure (Draw any resonance structures and then bond dipoles with another color)

Molecular Geometry

Polarity of Molecule (Polar or

Nonpolar?)

Initials

H2O

CO2

CHEM 1001 – 2020, Laboratory #5 2

BF3

NH3

CH4

When you finish CH4 you need to switch molecular modeling programs, call your TA into your zoom room for the link!

O2

CHEM 1001 – 2020, Laboratory #5 3

O3

SO2

NF3

NCl3

CHEM 1001 – 2020, Laboratory #5 4

CH2O (formaldehyde)

C3H6O CH3COCH3 (acetone)

C on Left: (w/oxygen)

Center C:

C on Right:

C3H8O CH3CHOHCH3

(isopropyl alcohol)

C on Left:

Center C:

C on Right:

For O:

CHEM 1001 – 2020, Laboratory #5 5

Part 2: Post Lab This part of the laboratory will be completed after your laboratory

1) Fill in the table below. Note: You found the molecular geometries for the chemicals whose formulas are written in bold type as part of the previous table.

Formula Molecular Geometry

H2O

H2S

CO2

CS2

CH4

SiH4

NCl3

PCl3 2) Look for a pattern in your answers to the questions in the table above. Explain the

relationship between groups on the periodic table and molecular geometries.

  1. Molecular GeometryH2O: Bent
  2. Polarity of Molecule Polar or NonpolarH2O: Polar
  3. InitialsH2O: WZ
  4. Molecular GeometryCO2: Linear
  5. Polarity of Molecule Polar or NonpolarCO2: Nonpolar
  6. InitialsCO2: WZ
  7. C on Left woxygen Center C C on Right: polar
  8. Molecular GeometryH2O_2: Bent
  9. Molecular GeometryH2S:
  10. Molecular GeometryCO2_2: Linear
  11. Molecular GeometryCS2:
  12. Molecular GeometryCH4: Tetrahedral
  13. Molecular GeometrySiH4:
  14. Molecular GeometryNCl3:
  15. Molecular GeometryPC l 3:
  16. Text1: Wenjia Zhang
  17. Text2: Trigonal Planar
  18. Text3: Nonpolar
  19. Text4: WZ
  20. Text5: Trigonal Pyramidal
  21. Text6: Polar
  22. Text7: WZ
  23. Text8: Tetrahedral
  24. Text9: Nonpolar
  25. Text10: WZ
  26. Text11: Linear
  27. Text12: nonpolar
  28. Text13: WZ
  29. Text14: Bent
  30. Text15: polar
  31. Text16: WZ
  32. Text17: Linear
  33. Text18: nonpolar
  34. Text19: WZ
  35. Text20: trigonal pyramidal
  36. Text21: polar
  37. Text22: WZ
  38. Text23: trigonal pyramidal
  39. Text24: polar
  40. Text25: WZ
  41. Text26: trigonal planar
  42. Text27: polar
  43. Text28: WZ
  44. Text29: tetrahedral
  45. Text30: trigonal planar
  46. Text31: tetrahedral
  47. Text32: WZ
  48. Text33: tetrahedral
  49. Text34: tetrahedral
  50. Text35: tetrahedral
  51. Text36: bent
  52. Text37: WZ
  53. Text38:
  54. Text39: polar