Smith,+Anjuli

Several of the examples given in this article I didn't know was possible. It surprised me that you could carry around a flame in a bottle and that you can repel water away from glasses. Some of the others that were mentioned i have seen done before, like the invisible ink. I saw that in National Treasure where they used lemon juice and heat to make the written message appear. In Chemistry class we are using different elements in their different forms and seeing what happens and how they react when they are combined with or put in situations where they interact with other elements and compounds.

Anjuli Good connections to class and movies! 5 stars. MW

What surprised me was that crude oil could not be used in its original form; that it had to be changed before it could be of use to people. In order to make use of the oil, you first need to use the distillation method to make the substance which has a lower boiling temperature into gas in order separate it from the rest. You do this so that you end up with the right substance needed to make things like plastic, gasoline for cars, and polyester for shirts.

Anjuli, OK. Good points. MW

In this article, I read that the Kilogram is the last of the SI units that is still defined by a physical artifact rather than by an unvarying physical property of nature. I had thought that the Meter would also still be defined a physical artifact as well by using, say, a rod. Other SI units like Kelvin, Seconds, and Candela would not be able to have a physical artifact because they do not represent something physical. I think that this new standard could have a big impact on the population because it changes the standard in one big jump rather than the slow process in the years it took for those 50 micrograms to be lost. (Mr Williams, i did have this done like, a month ago before it was due. I don't know why but i guess it didn't load onto the page but it was saved to drafts)

I found this article very interesting because i had no idea elements came from stars. When it talked about how elements were all made from Hydrogen, it reminded me of how the theory of evolution says that all the living things on earth are supposed to have all evolved from one thing. That seems to be how a lot of things happen in science; one thing happens then a bunch of other things happen because of or from it. I also liked how the article said that we are made from star bits, it's interesting to think of it that way.

Anjuli,

Yes. Well I suppose we have to come from somewhere! 5 stars. MW

I personally love the idea of mole day. It is kind of like pi day for 3.14 only this is more interesting. I would have thought that mole day would be more like 6/02- June 2nd because that comes first in the equation. As cool as the name is however, it surprises me. I would have thought that this concept would be named after Avogadro, where did they get mole from? Although, i guess we do say that 6.02x10^23 is "Avogadro's number" which is equal to 1 mole.

Anjuli, Interestingly enough June 2 is like junior mol day. I think they picked the October one since virtually all kids are in school then. In June some are out. Good stuff. 5 stars. MW

I was fascinated, and rather frightened, by the fact that just simple dust on the ground is combustable. It's a crazy concept that something that is everywhere can actually be dangerous. It is interesting how the explosion at the dust plant happened; first just one part of the factory was effected, but then it spread like a domino effect through the factory with each explosion raising up more dust, then that would explode too.

Anjuli, Yes the whole plant looked like it was destroyed. Scary stuff! 5 stars! MW

I knew that Helium was bad for you to breathe in because you aren't getting the necessary oxygen to live. I knew that there were also other dangers in breathing Helium because you could inhale the oils in the tank containing the gas. I also knew that a balloon filled with Helium gas would eventually deflate because the helium would leak out of the pores in the latex. However, I didnt not know that you're body has a gasping relex, not to the lack of oxygen, but the buildup of Carbon Dioxide. I also haven't herad of the gas Sulfur Hexafluoride, nor that it would increase the size of a balloon. In fact, I didn't know that there was a gas that could make your voice go lower! That's pretty neat.

Anjuli, Well done! Looks like you picked up on a few pertinent facts! 5 stars. MW

I knew that there were motion detectors that detected the motion that blocked the light source from a photo sensor, but I figured that that was the only way, I didn't realize there were 3 different techniques. I also knew that Einstein won the Nobel Prize, but I didn't know it was for his work on the photoelectric effect. I knew that automatic garage doors used the beam of light to detect objects in the way because with all of us kids there are lots of toys in our garage and they would often get in the way of the door closing, so the door wouldn't close until the toy was moved. I learned the process of why we can see; because our eye is a kind of photo sensor.

Anjuli, Good practical experience with the garage sensor! Well done. 5 stars. MW