Curated OER
GUM: More, Less, or the Same?
Young scholars confirm the law of conservation of matter by weighing chewing gum before and after it is chewed.
Science Education Resource Center at Carleton College
Serc: Conservation of Mass Gum Lab
Students investigate whether or not chewing gum should be considered eating using the law of conservation of mass to reason that the portion lost of the original mass of gum must be swallowed.