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  Home > JCE Print > Journal of Chemical Education > Issues > 2004  > May  >
Chemistry for Everyone
JCE Classroom Activity
Determining Rate of Flow through a Funnel
Martin Bartholow
Shawnee Mission North High School, Overland Park, KS 66204
Cover
May 2004
Vol. 81 No. 5
p. 672A
Abstract
This inquiry-based Activity illustrates kinetics concepts using the rate of the flow of water through several funnels made from plastic beverage bottles and rubber stoppers with varyings numbers and sizes of holes. The amount of time it takes different volumes of water to pass through different funnels is recorded. A graph of time and volume data from the Activity results in a curve whose slope equals the rate of water flow. Students are asked to anticipate what conditions control the rate of water flow, and are given a variety of stoppers to test their hypothesis. Sample experimental data is included as online supplemental material. Data is shown for the emptying rate of 1) one-, two-, and three-hole stoppers; 2) different hole sizes for stoppers; and 3) different column heights for the same initial volume of water.
Supplement
Flow rate data from a similar investigation are available.
*  Contents JCE2004p0672AW.doc (Microsoft Word)
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JCE2004p0672AW.zip

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More Information
*  Citation
 Bartholow, Martin. J. Chem. Educ. 2004 81 672A.
*  Keywords
 Inquiry-Based / Discovery Method; Introductory / High School Chemistry; Kinetics; Teaching / Learning Aids
*  History
 Created:
Last Updated:		 April 1, 2004
February 18, 2005
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