The Colorimeter Probe Home age, MSTE, University of Illinois色度计探头主页，组织，伊利诺伊大学.pptVIP

The Colorimeter Probe And integrated math and science approach. Rachel, Melissa, Kerrie, Nathan, Matt, Beth Absorbance and Concentration Beer’s Law states that there is a linear relationship between the concentration of a solution and its absorbance. A = epsilon * b * C, b = width of cuvette Our Experiment We used different amounts of food coloring in water and measured each solution’s absorbance using the colorimeter. The following slide is the somewhat linear graph we got from our experiment. It’s not exact because of experimental error. The Math of It Students will discover whether or not this graph is linear, why it is linear, and how it relates to Beer’s Law and the equation y = mx + b. We could also find the line of best fit and discuss how to find that on a given graph. This is most appropriate for an Algebra II class. Science! Students will make the different concentrations of solutions for their samples (in moles/liter). This gives them practice in making solutions. This would best fit in an intro. or upper level chemistry class. Math, Science, and Inquiry We would encourage students to inquire about other data they could collect, such as using different colors. The students could be asked to explore more options that they come up with on their own. * *