The Eagle Farm Stand just received a huge shipment of pineapples. In an effort to use them up before they spoil, they decided to cut them and add them to Jell-O to make fruit cups for the neighborhood parks. They prepared the Jell-O as directed on the box, added the chunks of pineapple, and placed them in the fridge to set overnight. The next morning they were shocked! The Jell-O was still a liquid and their hopes of delivering a refreshing, summer treat to the parks were halted. What happened?