Sunday, September 18, 2011
Changes in State
In fourth grade we are exploring the elemental nature of our word. We are exploring what our universe is made of - matter. On Wednesday, we learned about the known states of matter - solids, liquids, gases, plasma, Bose-Einstein Condensate, and Fermionic Condensate through an interactive online presentation. On Friday, we experienced three of those states and watched how some forms of matter changed from one state to another. To experience these changes we used dry ice, a solid form of carbon dioxide. As a grand finale, a few pitcherfuls of dry ice was added to hot water to induce a massive amount of sublimation; a giant cloud of carbon dioxide gas formed which amazed everyone.