Welcome back from spring break. This is the first of the assignments for this week's homework. Remember, these are about 20% of your grade, so it is important to take the time to practice the stuff we introduce in class at home.
For each problem below, use the table [HERE] to figure out what state (gas, liquid or solid) the sample started in, and what state it ended up in.
1) A sample of mercury starts out at 560 degrees K, and then cools down (ie, the temperature decreases) by 100 K.
2) A sample of ethyl alcohol starts out at 153 degrees K, and then it heats up (ie, the temperature increases) by 100K).
3) A sample of gold starts out at 300 degrees K (fridge temperature). Then, a chemist increases the temeprature by 1000 degrees K.
4) A sample of hydrogen starts out at 90 degrees K (colder than any temperature on earth), and then cools down even more to end up at 50 degrees K.
5) A sample of iron is in the earth's mantle (under the crust) where it is very hot -- 2,400 K. When a volcano spits out the sample onto Earth's surface, it cools down by 500 K.
6) A sample of oxygen starts out at 100 degrees K, and then its temperature is decreased to 60 degrees K.
7) A sample of nitrogen starts out at 100 degrees K, and then it is chilled down to 50 degrees K.
A site to communicate HW and other information to the Wildcats who are learning chemistry with Mr. Mikulski!
