Beer's Law Lab
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Topics
- Beer's law
- Solutions
- Concentration
- Molarity
- Light
- Absorbance
- Transmittance
- Spectrophotometry
Description
“The thicker the glass, the darker the brew, the less the light that passes through.” Make colorful concentrated and dilute solutions and explore how much light they absorb and transmit using a virtual spectrophotometer!
Sample Learning Goals
- Describe the relationships between volume and amount of solute to solution concentration
- Explain qualitatively the relationship between solution color and concentration
- Predict and explain how solution concentration will change for adding or removing: water, solute, and/or solution
- Calculate the concentration of solutions in units of molarity (mol/L)
- Design a procedure for creating a solution of a given concentration
- Identify when a solution is saturated and predict how concentration will change for adding or removing: water, solute, and/or solution
- Describe the relationship between the solution concentration and the intensity of light that is absorbed/transmitted
- Describe the relationship between absorbance, molar absorptivity, path length, and concentration in Beer’s Law
- Predict how the intensity of light absorbed/transmitted will change with changes in solution type, solution concentration, container width, or light source, and explain why
Teacher Tips
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Overview of sim controls, model simplifications, and insights into student thinking ( PDF ). |
Teacher-Submitted Activities
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Authors | Level | Type | Subject |
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| Beer's Law Lab - Guided Inquiry Activity |
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Susan Hendrickson, Julia Chamberlain | UG-Intro | Guided Lab |
Chemistry |
| Investigation of a Solution’s Color (Qualitative and Quantitative) - Guided Inquiry Activity |
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Ted Clark, Julia Chamberlain | UG-Intro | Guided | Chemistry |
| Beer's Law Warm-Up |
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Julia Chamberlain | HS UG-Intro |
HW | Chemistry |
| How do PhET simulations fit in my middle school program? |
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Sarah Borenstein | MS | Other | Biology Physics Earth Science Chemistry |
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| Alignment of PhET sims with NGSS |
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Trish Loeblein | HS | Other | Chemistry Earth Science Biology Physics |
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| PhET Sims Aligned to the Chemistry Curriculum |
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Julia Chamberlain | UG-Intro HS |
Other | Chemistry | |
| MS and HS TEK to Sim Alignment | Elyse Zimmer | HS MS |
Other | Physics Chemistry Biology |
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| Light and Atoms | Lyric Portwood | HS UG-Intro |
Guided Lab Other |
Physics Chemistry |
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| Beer의 법칙 사용지침서(User Manual) | 이화국(Wha Kuk Lee) | Other | Other | |||
| Beer's Law Lab: Introduction to Beer's Law | Joel Barthel | UG-Intro HS |
Lab | Chemistry Other |
| Windows | Macintosh | Linux |
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Microsoft Windows XP/Vista/7/8.1/10 Latest version of Java
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OS X 10.9.5 or later Latest version of Java
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Latest version of Java
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| Design Team | Third-party Libraries | Thanks To |
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