Lee,+Elyse

The first graphic organized the information by what the matter is capable or not capable of, and showed pictures. The other two visuals break down the different types of matter. The only difference between the two was that the third one gave examples. I thought the best-displayed graphic was the third one, because it clearly showed the relationship between the different types of matter. It breaks the entire classification into a simple display so I could understand it clearly, and even give examples to show real life scenarios. However the first graphic was just as helpful because it showed a visual on how the matter would appear like, and gave more information.
 * Classification of Matter:**

I was familiar with the concept of chromatography from Biology, but I did not know about the different types of separating matter. I thought it was interesting how fractional distillation worked, and how it could be used in industries and factories. I never realized that crude oil could be used for other purposes and transformed into gasoline. I wonder what would have happened if we used a different substance rather then saltwater? Separation of matter is relevant to because one of the topics in Chemistry is matter. Becoming educated on how matter is distributed and dispersed is important to know, as well as what matter is made of. Mixtures of matter are useless, so in order to conduct experiments or use the matter, it is necessary to separate them.
 * Seperation of Matter:**

Measurement is vital in my everyday life, especially for sports. In track and field, I run the 800m and the 3200m relays. In an individual race the markings on the track must be marked correctly because each individual begin in a different distance from the start line varying on the lane you are placed in. If the measurements are marked incorrectly, then the race will not be fair. A participant could be running a fewer distance then his/her competitor, therefore having a greater chance of winning or resulting in a faster time. Other then track, I enjoy watching Proxy-Connection: keep-alive Cache-Control: max-age=0 orts such as gymnastics. In the vault event, each individual has different measurement alignments in the distance from the vault from the trampoline. If the measurements are conducted incorrectly, then the gymnast could result with an unfair score, or worse, an injury. Measurements are important in many aspects in life, other then sports. From the amount of medicine taken, or the length of a field hockey stick, it is an important feature in our lives.
 * Why is measurement important to you?:**

Elyse, With gold medals awarded based on 1/100 of a second. I think measurement is very important in track. Good Post! MW

I think the article, Redefining the Kilogram was interesting. I think replacing the physical mass of the kilogram with the Avogradro's constant is a good idea. The official standard is important to keep accurately and precisely, for if it isn't, many mistakes can be conducted which could lead to distrastious events and conclusions. The perfect measurement is neccisary for experiments and discoveries to be conducted correctly, and able to be repeated successfully. Avogadro's constant is much less difficult to maintain and take care of then the physical kilogram, which has already lost 50 mg. In addition, the fact that this concept will be much easier to use for students, such as myself; and the chosen standard to chemists, which is a plus. All in all, I think the BIPM should respectively choose to redefine the kilogram.
 * Redefining the Kilogram:**

Elyse, Good insight and summary! MW

This article was really interesting to me. I have been on airplanes numerous times, and I always dreaded the security portion of the boarding. The long lines and slow pace of the procedure had always irked me, because I was always so anxious to board the plane and worried I was going to miss my flight. Plus, you have to pack according to the plane regulation rules for carry ons, and if it didn't follow the rules you would have to dispose of your personal and sometimes valuable items. However, after reading this article, it gave me new insight on the reason why this is important and how the procedure is completed. Everytime I would glance at the screen, the picture never made sense and I was always curious on how it worked. Sometimes someone in front of me would have to empty their bag, and I wouldn't understand why or how they detected anything. This article clarified that. I appreciatte the fact we do have these security measures because post 9/11 and the crazy things people do (such as creating websites teaching people how to create bombs) makes the world a scary place to live, and I'm glad people are doing their part to keep us safe.
 * Airline Security:**

The National Mole Day website was actually interesting in a fun and quirky way. I liked the witty jokes and humor involved in the website, but it also helped me clarify the idea of the mol, and further my understanding of the concept. I also learned more about Avogadro and the history of his number. I found it interesting he was not credited as an important scientist in his lifetime because he did not support his ideas with evidence, and how he was deemed a 'careless' scientist. That is suprising because from what we have learned or done in chemistry so far this year, it is a subject you must be extremely careful and exact about. I also discovered that the term 'mol' may originate from the latin term molus, which means "little pile". Overall, I found this site to be enertaining enough, and I like being deemed a 'sophmole'.
 * Mole Day:**

Elyse,

One of the best posts that I have read! Funny too! Well done. MW


 * Dust Explosions and Stoichiometry:**

I think stoichimetry is incredibly important and useful in everday life, especially in factories as this article suggests. Stochiometry can be used to determine just how much of an object can be explosive, and what the important amount of that substance must be in order to be safe and prevent explosions, such that occured in the sugar factory. It proves that everyday substances can be dangerous if they are not handled properly, which is where stoichiometry comes in. In this reaction the amount of limiting reaction (sugar) had reacted with the excess reaction (the oxygen) to result in the reaction. If the factory had realized how much of the products would react to the oxygen, then they could have prevented this explosion from occuring. Stochiometry can help prevent further hazadous injuries and explosions, and very important.

Elyse, Well covered! MW

I never heard of Sulfur Hexafluoride before, and I think it's a fascinating subject to learn about. The fact that the molecule is perfectly symmetrical and that the polar bonds cancel out to allow the molecule to stay at room temperature is interesting, as well as the fact the sulfur hexafluoride allows the balloon to expand on it's own (rather then deflating as the helium would). I discovered that this occurred because more molecules leak out then leak in the balloon. I think that's really cool. The activity of the gas along with Helium being able to be swallowed and affect our voices is so common. However I never realized the dangers along with it. Passing out and causing bodily harm is a dangerous outcome from the activity that is perceived to be harmless. Overall I think this is an interesting topic, and I'm glad I know the fundamentals of how to achieve the voice of darth vadar.
 * Sulfur Hexafluoride:

Elyse, Good comments on the symmetry of the SF6 molecule! MW **

This article reminds me that everyday items and techniques are affected by chemistry. It pointed out that there were three techniques how motion on dectectors function. Echo's, light and heat. Bat's use echos, which is using wavelengths to "see" objects. Heat radiating from our bodies will generate infared images if you look into night vision goggles. Light beams while eveidently show where a person will be if they block the beam. These examples really help to simplify how wavelengths work, and make the topic we are learning in class much easier. Furthermore, I thought Einstien's photoeletric effect was extrememly interesting. I've always wondered why a one object could cause more damage than a thousand smaller objects (for example the article points out the a steel ball will cause more damage than a hundreds of ping pong balls) I always thought that the heavier variable would cause more damage, but ineveitbaly this article taught me it was the energy within the particle rather than the actual mass. Overall I think this is a great subject, and really demonstrates how chemistry fits in our daily lives.
 * Motion Detectors:**

The Amazing Elyse Lee! Your the first "poster" again! Great insight and well written. 5 stars!!! MW