Yesterday, we had our second lab with dry ice. Before we started the lab, we learned about phase changes. Such as turning water to gas, gas to solid, or water to a solid. We learned that it is because of pressure and temperature. The higher the pressure and temperature, the liquid or solid will turn into gas. If the temperature lowers same with the pressure, the gas and liquid will turn into a solid. Dry ice is a good example of this. Dry ice is just solid carbon dioxide and can be melted to become carbon dioxide once again.
The experiments that we did for the dry ice were very cool and interesting. The first one we did was put the dry ice in water. Right as we put the dry ice in the water, it became to bubble and smoke; releasing carbon dioxide. We then put dry ice into a balloon, and waited for the gas to fill up the balloon. The balloon was filling with carbon dioxide but it was really interesting because when we felt the dry ice through the balloon, it was still there. This means that for a very small amount of dry ice, there is a lot of gas that was produced. We then put bubbles on top of the beaker which had the smoking dry ice. The bubbles started to fill up with smoke and it was really cool to see it occur in an enclosed area, like a bubble.
I found it really interesting that the balloon grew so much for just a 2 cm ball of dry ice. The balloon grew to be 18 cm in diameter, meaning that the volume of the balloon was 3053.63 cm^3. I then found out the volume of the dry ice was 33.51 cm^3. This means that the ratio was 1:91.12. That means that when the carbon dioxide is solid, aka dry ice, the molecules are very close together, but when it is a gas, the space between the molecules is 91.12 times larger. I found this really interesting and I thought it was a really good representation of phase changes. Overall, I found all the experiments very interesting and it helped me learn about phase changes.
The experiments that we did for the dry ice were very cool and interesting. The first one we did was put the dry ice in water. Right as we put the dry ice in the water, it became to bubble and smoke; releasing carbon dioxide. We then put dry ice into a balloon, and waited for the gas to fill up the balloon. The balloon was filling with carbon dioxide but it was really interesting because when we felt the dry ice through the balloon, it was still there. This means that for a very small amount of dry ice, there is a lot of gas that was produced. We then put bubbles on top of the beaker which had the smoking dry ice. The bubbles started to fill up with smoke and it was really cool to see it occur in an enclosed area, like a bubble.
I found it really interesting that the balloon grew so much for just a 2 cm ball of dry ice. The balloon grew to be 18 cm in diameter, meaning that the volume of the balloon was 3053.63 cm^3. I then found out the volume of the dry ice was 33.51 cm^3. This means that the ratio was 1:91.12. That means that when the carbon dioxide is solid, aka dry ice, the molecules are very close together, but when it is a gas, the space between the molecules is 91.12 times larger. I found this really interesting and I thought it was a really good representation of phase changes. Overall, I found all the experiments very interesting and it helped me learn about phase changes.