PolyToday: Cohesion

From Merriam Webster:

Cohesion (n) co·​he·​sion kō-ˈhē-zhən
1. the act or state of sticking together tightly
2. union between similar plant parts or organs
3. molecular attraction by which the particles of a body are united throughout the mass

Seventh-grade students recently learned about cohesion and surface tension in a lab. The Class of 2030 first guessed how many paperclips Mrs. D'Amato could fit in a full container of water (spoiler alert—a lot) and then moved on to the challenge of how many drops of water they could fit on a penny before the water spilled. Students also compared what happened when liquid detergent was added to the mix and changed the surface tension.