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Lab Report: Molecular Models
The purpose of the Molecular Models experiment is to give you a better understanding of inorganic molecules and simple organic molecules from a two and three-dimensional point of view.
In this lab report, you will:
- Draw and generate 2D and 3D Lewis structures of molecules and ions
- Apply VSEPR theory to molecules and ions
- Apply Valence Bond Theory by determining the hybridization around a central atom
- Calculate the formal charge of atoms
- Determine the polarity of a molecule two ways
- by looking at the Lewis structure
- by looking at electrostatic potential maps and dipole moments
This assignment will also help you to become familiar with the following important content information:
- Draw Lewis structures of compounds.
- Identify the number of bonding electron clouds and lone pairs around a central atom.
- Identify the orbital geometry, approximate bond angle, and molecular geometry around a central atom.
- Determine the hybridization (which hybrid orbitals are used) to describe bonding around a central atom.
- Determine whether a molecule is polar or nonpolar.
- Determine the direction of the dipole moment for a polar molecule
- Calculate formal charge for an atom.
- Draw resonance structures.
- Identify axial and equatorial positions.
- Explain what the colors represent on an electrostatic potential map
- Draw Lewis structures for simple organic compounds
- Understand what structural isomers (or constitutional isomers) are
This exercise asks you to complete the following
- Prelab questions
- Reports sheets
- Use MolView Website to create 2D and 3D images of the molecules and ions and copy images onto a worksheet.
- Post lab questions
Criteria for Success:
Be sure to complete the prelab questions, report sheets, including worksheet for computer generated images, and post lab questions.
- Ask your instructor any questions that you may have as you complete the assignment.
- Before the start of lab on the due date:
- Use AdobeScan to take pictures of your prelab questions, report sheets, and post lab questions. Combine these with the word document containing your computer-generated images.