For this one lab section we ran experiments to observe sublimation and learned about phase changes. We did these experiments so we could calculate how much bigger a solid becomes once it becomes a gas. It started with Andrew taking a big chunk of dry ice and showing us how it works. With the dry ice he broke in smaller pieces to give to us, we took a large beaker and filled it with water. Then took the piece of dry ice and broke it in even smaller pieces, and took one of those pieces and dropped it in the water. The result was smoke coming from the beaker that resulted by dropping dry ice in it, this is called sublimation. Finally when we put our dry ice into a balloon it showed us that the balloon was 8 1/2 centimeters We divided the diameter in two to find the radius, then imputed the information in the formula for volume of a sphere (4/3πr^3). And plugged it into the equation for the volume of a sphere I got the ratio 1: 321.555. Here are some pictures from the lab.
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AuthorHello my name is Joshua Roberts, I am a 10th grade student at High Tech High. This is my chemistry blog where I will post all my work. Archives |