In this experiment, students use paper chromatography to investigate the food dyes used in candies like Skittles® and M&Ms®. By dissolving the candy coating in water and placing a drop of the resulting dye onto a strip of paper, students can observe how the different pigments travel up the paper when placed in a salt water solution. The solvent moves through the paper via capillary action, separating the pigments based on their polarity and chemical properties. This reveals whether each candy color is made up of a single dye or a mixture of pigments, helping students compare color compositions across different types of candies.
Welcome to the Emerging Leaders in STEM resource center! This is where you’ll find everything you need for this year’s Emerging Leaders in Biotechnology program. Whether you’re preparing for your next session or reviewing what you’ve learned, this page is for you.
In this design challenge, students will work together to design a tool or process that successfully removes an invasive species from an ecosystem while minimizing harm to the native species and environment.
In this challenge, students will practice problem-solving and collaboration skills as they design, build, and test their wind turbine
prototypes. Students will explore the role of renewable energy in powering communities, learn about energy transfer and mechanical systems, and gain insight into the importance of sustainable energy solutions.
