Bryndan Bedel Aug 20, Since melting points are relatively easy and inexpensive to determine, they are handy identification tools to the organic chemist. If you want to use the melting point to identify a solid compound that you have isolated in the lab, you will need to compare its melting point with that of the true compound. Measurements of the melting point of a solid will provide you with information about the purity of the substance.
Almost all published scientific articles contain an abstract. Scientists and clinicians also use abstracts to summarize the content of an oral presentation for a meeting or conference. On-line search engines of the scientific literature such as MEDLINE provide abstracts of journal articles and reviews to help the reader determine if the full scientific paper is relevant to his or her interests.
There are two types of abstracts: Informative abstracts are used most extensively in clinical and scientific publications. Informative abstracts are used in scientific writing to concisely identify what the longer document is about.
Abstracts are constructed using complete sentences and paragraph structure, usually with no embedded headings, bullets or tables. The third person, past tense is used. An abstract is written after the laboratory experiment and the full write-up of the work are complete.
Students will be required to write informative abstracts as part of a post-lab assignment for some experiments. An informative abstract for a laboratory experiment contains the following elements: Title, author saffiliation The title of the abstract is the same as the title of the longer report that it summarizes.
The authors name and the place where the work was done are included. Methods The name of the methods used to complete the work are cited. Specifics about the materials used or set-up details are not included in the abstract.
In most cases, one to three sentences should be sufficient for describing the methods. Results The experimental findings are reported next, in the most concise and direct manner possible. The length of this section of the abstract varies depending on the nature of the experiment.
Conclusion The conclusion section is a concise analysis and interpretation of the results of the work. References Texts, journals or other published resources that were used to conduct the experiment should be cited as a separate paragraph. A sample abstract for a typical organic chemistry experiment is given below.
Try to identify each of the elements outlined in the table above. The compound was taken from a list of twenty, known organic acids, each with different melting points. An experimental melting point was determined for the unknown compound using a Fisher-Johns melting point apparatus.
The thermometer of the apparatus was calibrated using benzoic acid as a standard. This value most closely correlated with the literature melting point of p-anisic acid, one of the possible twenty compounds on the list.
The unknown was identified as p-anisic acid. Experimental determination of an unknown compound's melting point is useful for identifying the compound.CHEM and – Organic Chemistry Lab I and II GUIDELINES FOR WRITING LAB REPORTS INTRODUCTION Writing reports in organic chemistry lab may differ from the way it’s done in general chemistry.
Organic chemistry Lab report Sample Students who are new to writing organic chemistry lab reports often meet with academic writing difficulties. Frankly speaking the key to a high quality paper is to provide clear, factual and specific information concerning the theme.
View Lab Report - Lab 1 Organic Chemistry - LAB REPORT template from CHEMISTRY at Marquette University. CHEM Laboratory 1: Organic Chemistry: Extraction of Fat and Thin-‐Layer%(2).
This pre-lab section will be turned in as part of their complete lab report for this multi-day activity and as you can see from the student work sample, the pre-lab work gets all of the students in synch as to the goals for the activity, the procedures for each lab test, and the roles each of them will play during the lab .
Organic Chemistry Formal Written Laboratory Reports Cabrillo College Chemistry Department Document Formatting Document should be standard ” x 11” with margins of 1”, 1”, ”, 1” (left, right. Introduction to Organic Synthesis Laboratory Spring organic chemistry and to introduce you to the exciting research area of catalytic asymmetric organic least 24 h, and you will need to do that during the lab period prior to the day that the equipment is needed.