PhET
Beer's Law Lab
Beer's Law can be used to measure the concentration of certain compounds in samples of food. In the concentration simulation, particpants change and measure the concentration of different solutions by manipulating various types of...
Curated OER
Using the Spectrophotometer to Analyze a Mixture
General chemistry classes practice spectroscopy. They grasp the relationships between wavelength, absorbance, and solution concentration. Additionally, they gain valuable practice using laboratory equipment such as burets and pipettes....
Curated OER
The Visible Spectroscopy Expert Witness Problem
In a simulated crime science investigation, chemistry or physics sleuths use spectroscopy to analyze solutions. The lesson gives learners practice making salicylate solutions, using spectrophotometers, calculating dilution amounts,...
Curated OER
Spectrophotometer Determination of an Equilibrium Constant
Students determine an equilibrium constant using a spectrophotometer. For this equilibrium lesson plan, students calibrate a spectrophotometer with 5 solutions in order to prepare the spectrophotometer for the experiment. Students...
Kenan Fellows
Absorbance Curves: Using Spectrophotometers to Quantize the Effects of a Strong Acid on a Buffer
The Henderson-Hasselbalch equation combined logarithmic terms with the application of carbonic acid as a buffer solution. Scholars learn investigate equation and its applications through hands-on experiments. They collect data and...
Kenan Fellows
Qualitative Kinetics: Examining the Effect of an Enzyme on a Reaction
Scholars learn about kinetics and buffers as they use qualitative and quantitative methods to understand enzyme rates and buffer capacity. The application of Beer's Law and spectrophotometry solidifies pupils' knowledge in the first of...
National Nanotechnology Infrastructure Network
Silver Nanoparticle Synthesis and Spectroscopy
Certain materials do not always maintain the same physical properties when they exist in the nanoscale. Help your classes to explore this idea through an experimental instructional activity. Scholars use spectroscopy with samples of...
NASA
Supernova Chemistry
By measuring the wavelength, frequency, and intensity of electromagnetic radiation, scientists determine the temperature, density, and composition of far away items. Scholars rotate through ten lab stations using a spectroscope at each...
Curated OER
Determination of Phosphorus Content in River Water
Divide your chemistry or environmental science class into two groups. Each group tests water samples from a river for the concentration of phosphorus using a different method. With chemists, you can use this activity as they learn to use...
Curated OER
D Block Elements: Complex Ions and Oxidation States
High schoolers investigate transition metals and their oxidation states. In this complex ion and oxidation states lesson plan, students use 6 transition metals and mix them with ligand solutions and oxidizing agents separately. They test...
Curated OER
Protein Assays: Bio Rad and Page Gels
Young scholars conduct the Biuret Test and the Bio Rad Protein Assay. They examine the spectrophotometer and graph molecular weights and the concentrations of the proteins investigated. They prepare solutions for the Bio-Rad test and use...
Curated OER
Generate a Calibration Curve for Chlorophyll a
High schoolers measure and graph the absorbance of light by chlorophyll at a specific wavelength versus chlorophyll concentration. They are given an unknown and determine its concentration from their calibration curve. Students become...
Curated OER
Operating the spectrophotometer
Working in small groups, learners explore the operation of spectrophotometer. Using the spectrophotometer, they investigate Beer's Law with everyday items.