O CHEM II LAB NOTEBOOKS You will keep a written record of what you've done in a hard-bound notebook (whose pages are not removable). I suggest the use of a Comp Book (the bookstores have tons to choose from. Label the cover in big bold letters with your name and the course number. (If you already have a laboratory notebook from a previous lab, you may use it. Don't skip any pages, just indicate your starting place in the existing table of contents.) Reserve a page or the inside front cover as a table of contents. You should be familiar with the desired layout of a notebook by now. Each laboratory period, before you go, the instructor will check to make sure you have completed the notebook (and check your previous conclusions). A grade will be assigned. Your experimental grade will be assigned based on your completion of the notebook and on the results you obtained. Remember: no pencil and never write anywhere but in your notebook. The first 7 items MUST be completed before you come to lab. Number 8 and 9 are to be completed IN LAB, and number 10 (the conclusion) is to be completed at home. 1. Your name. This one is self-explanatory and should be recorded at the top of each page. 2. The date. This one is self-explanatory as well. Make sure that the date you record in the notebook is the date that you wrote something in the notebook, and not the date that you plan to do the experiment. 3. The title of the experiment. Make up any title you want that describes the experiment. 4. The reason for doing the experiment. "Because we had to" doesn't cut it. Explain what it is you hope to get out of the experiment. 5. The reaction. Draw the reaction scheme. Draw out the mechanism of the reaction. 6. A table of useful data about the chemicals you will use. Note the word useful. If you are doing a distillation, your table should have boiling points. If you are measuring optical activity, you should have those values in your table. Remember, things like the melting point of pentane, the boiling point of MgSO4, or the optical activity of methylene chloride are useless information. Be sure your table of data has a listing of the hazards associated with each of the compounds we will use. 7. An outline of what you will do when you get into the lab. Read through the experiment and give yourself an outline of what you'll do. This'll shorten the amount of time you'll need in the laboratory. 8. A running account of what you did in the lab. What your outline says and what you did may be two totally different things. Record all of your observations (colors, sights, phase of the moon, etc.) in sentence format. 9. Data that you have collected. For example, if you measured the melting point of a compound, write it in your notebook. Be sure to correctly label each item and give appropriate units. 10. Conclusions you have drawn. Summarize what you did and apply it to the purpose of the experiment. Did you fulfill your purpose? EXAMPLE NOTEBOOK ENTRY: 1234- 5- 6- Compound name and formula weight are the bare minimum requirements. Consider the phase and that will dictate whether density is required. Solubility? Compatability? Hazards? Write what is pertinent to the lab and safety. Need to add additional details? Go for it; whatever information you use should be found on this table. 7- 8- Place the running account to the right of the Procedure and it makes notations and documenting quantities much easier. Make observations along the way and document in full detail. 9- Good example of how to fix a typo IR SPECTRA: - Label notable IR peaks, starting material and product Use IR to confirm absence/presence of product/starting material NMR SPECTRA: H O 3- Bad example of trying to fix a typo Never use this as a source of error.