Sunday, July 10, 2011

Activity Six

1. Convert 0°F, 32°F, 70°F, and 212°F to Kelvin
0°F=255.372222 K
32°F= 273.15 K
70°F=294.261111 K

2.





3.In the States of Matter simulation, choose the Solid, Liquid, and Gas Tab at the top of the screen. Choose the water molecule and cool the water to 0 K. Describe how the water molecules are aligned and attracted to each other. Which atoms are attracted to which other atoms?

All of the water molecules are in one big group. Once I cooled it down to 0 K, everything stopped where they were. The atoms that are different seem to be attracted to each other, there are not many that are the same color that are facing each other. The atoms are all in one big group, but the different elements that make up the atom are all facing the opposite atom.

4. Switch to the Phase Changes Tab on the States of Matter simulation. Notice how on the bottom right there is a small red dot that indicates where the system is at as far as temperature, pressure and state of matter. Play with the simulation to notice changes, notice that when you push down the pressure can go way up and explode the box. On your blog, report a temperature and pressure required to make oxygen a liquid. This is sometimes how the oxygen exists in pressurized oxygen tanks, perhaps like ones you may use to go diving.
440 K

5. List and describe at least two Science Standards that this activity addresses.
D 4.3: understand that substances can exist in different states-solid, liquid, gas.
D 4.4: observe and describe changes in form, temperature, color, speed, and direction of objects and construct explanations for the changes.
4.6 observe and describe physical events in objects at rest or in motion.

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