Sullivan,+Shandelle

__**Element Names in Us Towns**__-

I read this article and discovered that there are many more cities in the USA that have element names, than I realized. My favorite city was Zirconia, NC because that name sounded really interesting. I found Bromide, OK interesting because it is a gathering place for Native Americans due to its supply of "Holy Water." I found this interesting and it made me want to learn more about the Native American's "Holy Water." I think it would be interesting to learn about the legends of the Native Americans who believe in the "Holy Water" and their past history in Bromide.

Shandelle,

OK. You kind of stretched two things instead of mentioning three but OK. 5 stars. MW

__**Re-defining the Kilogram-**__

I had no idea that one single unit of measurement could be so important in the scientific community. Even though it won't affect schools that much, I think it's important to try and make sure the Kilogram continues to be defined as a physical artifact. If the Kilogram continues to be used as it should, the scientific community will remain well. However if this changes, scientists and everyday people may not understand English measurements anymore.

Shandelle, What are your three points and your MVP?? The last sentence doesn't make any sense to me? 3 stars. MW


 * __Crude Oil-__**

Crude oil is a thick brown liquid/ mixture of Hydrocarbons that can be both large and small. As a mixture the oil is useless, so it must be distilled inorder to get the valuable hydrocarbons out of the mix. The mix must be distilled more than once, and the first distillation is done by using a fume cubbert (sp), which is heated in a hot water bath. This liquid is clear. The second distillation process is done by using a Cydon, in which the water vapor cools at 40 degrees Celcius. The mixture is heated with a buncen (sp) burner, which will heat the mixtures content in order to seperate the hydrocarbons that are left in the mixture. This process is fullfilled by having two different boiling parts in the mixture, each hydrocarbon boils at a different temperature (40 degrees Celcius, and 60 degrees Celcius). This second mixture is a yellowish color, and the process being used is known as Fraction Distillation. Fractulating collums are used to do this on a larger scale. The further the liquid gets from the heat source the cooler it gets, and most of the water condenses on the inner part of the collum. Hydrocarbons at the top are the ones that are kept, and the seperation of the "good" and "bad" contents is sucessful because of the lower and higher boiling points of the mixtures content. By completing each step in this process correctly you can make the crude oil into usable oil.

Shandelle, Not sure what a Cydon is - do you mean side arm? Your post is a recounting of the contents of the video - you never declared what you most interesting point was. 4 stars. MW

__**Motion Detectors-**__

Before reading this article I knew that motion detectors where alarmed by a red light that they gave off. If the connection between the light and the object containing it were broken then the alarm would sound. I also knew that they were used in banks and other buildings that guard valuable items. I knew that the motion detectors sensed your body heat as a way of saying "someone is coming." I did not however know that there were different frequencies to the light that allow it to pick up the heat of ones body faster. I also learned that there are blue lights and lower frequency lights that are used in elevators and stuff like that to ensure that the door is securely closed. I never knew that Einstein's discovery would help us in so many of our daily activities. I though this article was very interesting, I liked learning about all the different types of lights and associating them to everyday life. :)

Shandelle, Well done! It is gratifying to me that you are seeing the relevance in our studies! 5 stars. MW


 * __Where do Chemical Elements come from?__**

Chemical Elements formed centuries ago during an explosion in space that caused chemicals to combine with one another in order to from ions and molecules. [25 words] :)

Shandelle, Looks good. Actually many explosions! 5 stars. MW


 * __Sugar an Unusual Explosive-__**

While reading I found it interesting that as substances are divided into smaller particles the amount of surface area increases. I related the burning of sugar to our class because of the lab we did to determine whether or not a substance was covalently bonded. I also related the process of your stomach digesting glucose to our class because of the equation that is summed up, and our process of writing the equations from word problems.

Shandelle, OK. A little sparse but 5 stars. MW


 * __Helium Balloons-__**

This article was about the buoyant force, which is equivalent to 0.0028 pounds.This force affects a helium balloon by causing the balloon to rise up toward the sky, due to the altitudes lower density. When Archimedes' principle came up it made me think of all the experiments that involved weighing an object in order to get the correct amount of an ingredient. What would happen if we applied the buoyant force to experiments, how would that affect the results? I think it would be interesting if we applied the buoyant force to an experiment that we previously did to see if the results would really be altered. The most important point to gather from this article is that although the buoyant force is small it still affects everyday life.

Shandelle, The buoyant force in air is .0028 g per Liter. I don't know what you mean by "altitudes lower density"?? Clearly define 3 VIP's. 4 stars. MW