Interactive Colors in Milk – Video from the American Chemical Society

Check out this interesting chemistry video sponsored by American Chemical Society!

Review questions:

  1. What are the types of molecules that are in milk?
  2. Are detergent molecules charged? (negatively charged, positively charged or no charge)?
  3. Why did the colors move in cool ways?

Deeper understanding of charged molecules:

-The negative end of the detergent molecules line up with the positive end of the water molecules.

-This causes the detergent molecules to zoom out in every direction over the surface of the milk and push the food coloring outward

-The negative charge on the detergent molecules are attracted to the positive parts of the protein molecules

-The uncharged part of the detergent molecules lines up with the uncharged fat molecules

Source: https://www.acs.org

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