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ERIC Number: EJ820769
Record Type: Journal
Publication Date: 2007-Sep
Pages: 2
Abstractor: As Provided
Reference Count: 11
ISSN: ISSN-0021-9584
Which Method Is Most Precise; Which Is Most Accurate? An Undergraduate Experiment
Jordan, A. D.
Journal of Chemical Education, v84 n9 p1459-1460 Sep 2007
A simple experiment, the determination of the density of a liquid by several methods, is presented. Since the concept of density is a familiar one, the experiment is suitable for the introductory laboratory period of a first- or second-year course in physical or analytical chemistry. The main objective of the experiment is to familiarize students with the concepts of precision and accuracy using data that can be acquired easily with a variety of volumetric apparatus and that can be analyzed by simple statistics and a linear regression. The added bonus of this experiment is that it provides a vehicle for reinforcing good and safe laboratory practices, for training in the use of volumetric techniques that will be encountered throughout the term, and for laying the foundations for the proper acquisition and analysis of data. (Contains 1 table and 1 note.)
Division of Chemical Education of the American Chemical Society. Subscription Department, P.O. Box 1267, Bellmawr, NJ 08099-1267. Tel: 800-691-9846; Tel: 856-931-5825; Fax: 856-931-4115; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education
Audience: Students; Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A