Curated OER
# 05 Color Me Analytical
Students are introduced to colorimeter on two levels. They investigate how to physically manipulate the colorimeters. Secondly, the students start on a pathway of discovery to one of the most important principles in analytical chemistry:...
Curated OER
Iron in Foods
Students determine the amount of iron in a sample of cereal. For this iron lesson plan, students use a computer colorimeter to measure the amount of light absorbed by the solutions. They create a calibration curve using standard...
Science Buddies
Science Buddies: How Blue Is Your Sports Drink?
Do you read the list of ingredients in foods and drinks before you buy them at the grocery store? If you do, you may have noticed that many of the items that are blue in color have the same dye, called FD&C blue 1. In this chemistry...
Texas Instruments
Texas Instruments: Nitrate
Student uses the Nitrate Ion-Selective Probe to measure the Nitrate ions concentration in water samples. In another method, student converts nitrate ions to nitrite and uses the Colorimeter to measure nitrite and calculate the nitrate...
Texas Instruments
Texas Instruments: Photosynthesis
Students can use a Colorimeter to compare the rates of photosynthesis for plants in different light conditions. They investigate the role of chloroplasts and light on photosynthesis.
Texas Instruments
Texas Instruments: Determine Concentration of a Solution: Beer's Law
Students can use a Colorimeter to determine the relationship between concentration and absorbance of nickel sulfate solution (Beer's law). They will then determine the concentration of a unknown sample using the standard curve.
Texas Instruments
Texas Instruments: Phosphate Analysis
One method of measuring phosphate concentration is by using a Colorimeter. This instrument measures the amount of light transmitted through a sample at a given wavelength.The amount of light absorbed is mathematically related to the...