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Cool! Rates of Heating and Cooling

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Martin Bartholow

Johnson County Community College, Overland Park, KS 66213,

J. Chem. Educ., 2007, 84 (3), p 448A

DOI: 10.1021/ed084p448A

Publication Date (Web): March 1, 2007

Abstract

In this Activity, students measure and graph the rate of warming for a chilled thermometer bulb held in room temperature air, for a chilled bulb held between two fingers, and for a few milliliters of chilled water. Students are familiar with the everyday phenomena of warming, but measurement affords the unexpected result that the process is not linear. An extension allows student inquiry into how different variables affect the rate of warming of water. Measuring temperature change is foundational for other experiments, and rates of warming and cooling can lead into a kinetic description of heat and matter. The Activity can also be related to Newton's Law of Cooling.

Keywords (Audience):

High School / Introductory Chemistry

Keywords (Domain):

Physical Chemistry

Keywords (Feature):

JCE Classroom Activity

Keywords (Pedagogy):

Inquiry-Based / Discovery Learning

Keywords (Subject):

Calorimetry / Thermochemistry

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This article has been cited by 1 ACS Journal articles (1 most recent appear below).

A Class Inquiry into Newton's Cooling Curve
Martin Bartholow
Journal of Chemical Education2007 84 (10), 1684
- A Class Inquiry into Newton's Cooling Curve
  Martin Bartholow
  Journal of Chemical Education2007 84 (10), 1684
  Newton's cooling curve was chosen for the four-part laboratory inquiry into conditions affecting temperature change. The relationship between time and temperature is not foreseen by the average high school student before the first session. However, during ...
  Abstract | Hi-Res PDF | PDF w/ Links