Boothe,+Shannon

The graphics all displayed the differences and similarities very well but I think the compound and the mixture best shows the areas in which they differ, In the mixture two or more elements are showing existence but aren’t as closely bonded as they are in Compounds. My favorite graphic would have to be the compounds because it shows the most information such as fixed composition and the illustrations best express the equal proportions necessary for compounds.

Shannon Boothe

Before seeing the video I hadn’t realized that crude oil needed to be distilled before it became of use to us, I hadn’t realized how many substances needed to be distilled before they became useful and its also interesting to know that they would use electric heater or boiling water instead of a flame to separate the different substances in crude oil. It was intriguing to learn how they solved the dangerous problem of a flame under oil.

Shannon Boothe

Measurement is important for smaller things such as cooking or greater things like medicine and vaccines. If someone is given to much of one peticular drug they could die, or get really sick. Then theres also the trouble if too much of one part of a drug is added and it gives worse symptoms then it would cure. Cooking though often not as important plays an everyday rule to make food taste good or just to make it healthier. If something isn't measured correctly it could end someones life forever and hurt their friends and family, and it can also effect the small stuff like a meal could made someone sick.

Shannon Boothe

I found the article extremly interesting the international prototype which was ratified as the official kilogram only in 1889 yet its refered to as the mona lisa for science. Its also interesting to learn that its lost around 50 ug over time compared to the copies. Even though it is a very minute amount it technically makes it inacurate by 50ug and over time it may lose more than just 50ug. It seems scientists have come to a similar conclusion and in my opinion its that a more accurate version of the kiligram should be made the official kilogram and still keep the official kilogram of now as a part of scientific history but not apart of the SI units standards.

Shannon, Good stuff! I agree with you. MW

I can't understand why anyone would want to bomb anyone else let alone go through airport security to do it. Yet people have concocted special plans, like mixing chemicals on the plane to make it explode or disgiusing it as something else. I am also amazed by the vast technology we have to detect the chemicals, bombs, or any kind of weapon. It is common to know that there are dangerous chemicals in the normal household but that a person would go through all the trouble of getting on the plane assembling the chemicals most likely killing himself and the passengers on the plane. It is a good feeling to know that detectors are being invented that can find even small chemical particles but even assuming that the dectectors are perfected it does not guarantee their place in the airport. I have often complained about the wait in airport security but with all that has to be detected I realize I should have counted my blessings it was going so fast and that I didn't have to get up any earlier.

I felt it was very interesting to learn that Avogadro's theory was not taken into account more quickly and the reasons for this was because he was not as famous for past experiments and did not follow up his theory with many various experiments. Generally almost every theory is taken into account today wether it be in a national geographic or a small hometown. Then when one is ignored such as this it is almost ironic that he was ever considered a careless experimenter when he far surpassed other great scientists of his time.

Though the dust particles seem like little matters they collect and spread through out factories, and even though the substance is small that means it will only burn faster and with less energy, What is dangerous is that not everyone understands that many things broken up into dust become only that much more combustible. It only takes one spark to set the explosion off and unfortunately it takes a lot more to make it stop


 * Sulfur Hexaflouride**

Its amazing to learn that Sulfur and Hexaflouride which are highly reactive elements have so much less dangerous qualities together than one might believe. Its even more amazing and a little scary that we could die from it and hardly realize it. I like how they described it, that when you are holding your breathe you instinctantly want air and you are aware that you dont have any, but with this substance you cant tell and after a while being unaware of your lack of air could cause you to pass out. Another cool fact is that a balloon filled with Sulfur hexaflouride grows in size, the reasons are fascinatig too, where the heliums atoms move quickly so they would leak more quickly out of the baloon then air could get in and a balloon filled with air stays the same because air comes out of the balloon at the same rate as air goes in, however a sulfur hexaflouride balloon allows air to come in faster than the sulfur hexa flouride can get out.

Shannon, Good thoughts! MW

There are about three different kinds of motion detectors. One sends a light to a photo sensor, when the light is interrupted it knows something has passed through. Another sends out pulses and uses another device to pick up on the pattern when the pattern is received different from normal it knows something is there. The last listens to warmth, by monitoring all infrared radiation. A photo sensor which is used for the all motion detectors is dependent on the lights (electromagnetic radiation..) capacity for pushing around electrons. It relies on lights ability to start an electric current. This is when light of enough energy is shined on a surface; it may cause electrons to be ejected. This is known as the photoelectric effect. I had heard about some of these types of motion detectors but some of the things suggested in the article still leave me a little doubtful. Things like pushing electrons around or ejecting them. However I liked reading the article.
 * Motion Detectors:**

Shannon, It's always good in science to be a little skeptical. MW