Looking Back: What happened? Before starting this lab we took notes on phase change of matter. A phase of matter diagram is where it demonstrates how every substance can be a solid or a liquid. My teacher Andrew used a pressure gage and this wide u-shaped tube to show us oh dry ice can turn into a liquid and then a gas.The first step to this experiment was to drop a small piece of dry ice inside a beaker of H2O,then comment/observe the difference in amount of solid compared to gas. The second step was to place a small piece of frozen CO2 (1 cm in diameter) into a balloon and tie it off. Then, measure the diameter in the balloon once it completely sublimes. | |