Students will be guided through an investigation to study food dyes and determine how the absorbance of light can be used to study color and determine concentrations of chemicals in solutions. The activity contains enough materials for 15 groups of students as well as a Teacher’s Guide and Student Study Guide Copymasters. This lab meets Big Idea 1, Investigation 1, and Primary Learning Objective 1.15. Kit Includes: 10mL Food Dye Blue #1, 0.5% 8 Test Tube 4 Graduated Cylinder Materials needed but not supplied: Water, distilled or deionized Consumer beverages, blue, red, and yellow Spectrophotometer with cuvettes DOT: Non-regulated