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My report on "Phase Change: Day One"
My report on "Phase Change: Day One"
Student name: Kendall McKiever McKiever
Teacher name: KYorkCCHS
School: Corydon Central High School
Submission Time: 8/17/15 2:13 PM
Page 1 : http://mw2.concord.org/public/part2/phasechange/page1.cml
1. List three more everyday examples of phase change.
Ice makers, rain turing into sleet, puddles evaporating, lava (1:50:10 PM)
Page 2 : http://mw2.concord.org/public/part2/phasechange/page2.cml
1. Describe the motion of atoms and molecules in a gas.
They randomly move quickly, creating and breaking bonds often and have no definite shape. (1:54:57 PM)
2. How are the behavior and arrangements of gas molecules similar to and different from soccer players running in the field?
On a soccer feild players will come in contact and the soccer ball, which could be the connection, draws players towards each other, but they seperate when the ball leaves. The formations soccer plays are during the game are not defintie, just like their positions on the feild. Players however, unlike molecules, do not have to move constantly, like the goalie. Players also have a general area they should be around, molecules don't. (1:56:25 PM)
Page 3 : http://mw2.concord.org/public/part2/phasechange/page3.cml
1. Record the average number of dashed lines there are per atom of each liquid.
Average of 4.5 bonds per molecule (1:59:49 PM)
2. Observe the motion of the atom or molecule that were randomly selected. Describe the movement of that atom/molecule compared to the atoms around it.
The motion is almost circular becuase of the molecules being so close together and the amount of bonds on each molecule. These factors allow it to move, because it breaks the bonds but reconnects with molecules close by, limiting movement. (2:04:55 PM)
3. How far do the atoms in a liquid appear to travel? Press the "Randomly pick an atom and show its trajectory" button, take a snapshot and place a snapshot image that you think best answers this question in the box below.
They move in a circular pattern but can move across the container (2:03:07 PM)
4. How does the motion of folks at an outdoor rally resemble a liquid?
They can move around freely with some trouble, but they can bounce off one another too. (2:06:41 PM)
Page 4 : http://mw2.concord.org/public/part2/phasechange/page4.cml
1. Stop the model and estimate how many dashed lines there are on the average for individual atoms inside the solid (not on the edge). Write down the number for each model below.
Solid 1: 4
Solid 2: 8 (2:10:13 PM)
2. How would you describe the movement and arrangement of atoms and molecules in a solid?
They vibrate almost in place, the solid as a whole can move around, but not individual pieces. (2:10:49 PM)
3. Molecules of gas are so far apart that the intermolecular attractions are pretty insignificant on the random thermal motion of the gas particles. Describe the role of intermolecular forces for solids and liquids.
Solid's and liquid's connections keep them together, but in gas their connections are so small it allows the gas to expand infinitly. (2:13:52 PM)
4. How does the motion of atoms and molecules in a solid resemble people in a movie theater?
they fidget, moving slightly in their seats, but their in a seat in a formation. (2:08:50 PM)
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