Today in class we learned about the phases of matter, specifically when a solid turns into a gas, a process which is called "sublimation." We watched this transition first hand by putting a piece of dry ice into a balloon and measuring it's expansion over time.
First, we measured the original diameter of the dry ice as a solid, which in my groups case was 2cm. After this we put it into the ballon and tied the balloon off. We then proceeded to wait and watch until there was no longer a rattling piece of dry ice in the ballon. This meant it was completely in gas form. We found that the diameter of the solid dry ice was much smaller than it's diameter in gas form.
By using the equation and doing the math below, I was able to figure out the volume of the solid C02 and the volume of the gas CO2 after sublimation. The ratio of these volumes is 1:999.93, this means that for every one unit of CO2 there's about 1,000 times as much space between the gas form as there is between the solid form.
First, we measured the original diameter of the dry ice as a solid, which in my groups case was 2cm. After this we put it into the ballon and tied the balloon off. We then proceeded to wait and watch until there was no longer a rattling piece of dry ice in the ballon. This meant it was completely in gas form. We found that the diameter of the solid dry ice was much smaller than it's diameter in gas form.
By using the equation and doing the math below, I was able to figure out the volume of the solid C02 and the volume of the gas CO2 after sublimation. The ratio of these volumes is 1:999.93, this means that for every one unit of CO2 there's about 1,000 times as much space between the gas form as there is between the solid form.