Monday, September 6, 2010

Evidence of a Chemical Reaction

http://www.youtube.com/watch?v=hVK9Om4wzBM
In order for this chemical reaction to you have to wait for a couple of seconds. After that, you cam see the chemical reaction developing. First you can see a red eruption on the bottom of the glass. After that the liquid inside turns red. After that, bubbles start forming and an interesting sort of gas is released. This is a chemical reaction because the Bromine and Alcohol combine and make a specific reaction that cannot be replaced.
http://www.youtube.com/watch?v=8ypUVpwgcAA&feature=related
When the lithium is put into the water it instantly lights on fire. After it has made its drastic way through the base, the fire goes and way and the lithium helplessly floats on the top. This is a chemical reaction because the atoms mix and no physical change is located. It also cannot be replaced, therefore its a chemical reaction.

http://www.youtube.com/watch?v=896vJj6eWYw&feature=related
The minute the cesium is put into the water, there is an instant explosion, sort of like a firework. At the very instant the cesium falls in the water, there is a firework explosion. In the picture at the end you can see how the cesium exploded and it separated into bits. This is an chemical reaction because the change occurs on the inside. It cannot be described in "physical language".

http://www.youtube.com/watch?v=qRmNPKVEGeQ&NR=1
This chemical reaction is very similar with the lithium one its just this is potassium. When it firsts catches on fire there are a few sparks and the fire continues making its way on the water. Its stays on fire for a little while and the fire disappears. The same like the rest, this is also an example of a chemical reaction.

http://www.youtube.com/watch?v=vJslbQiYrYY&NR=1
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t the beginning you can see a small fire building up in the bottle. After the fire comes a massive explosion which is why they had protection. After the explosion everything calms down and you can notice only the disturbed water. This is once again a chemical reaction.

http://www.youtube.com/watch?v=w2mj-Sq2oeo&feature=related
This video is my favorite. There is this person with a bowl filled with liquid nitrogen. Now this person pours the nitrogen into the pool. And a sort of cloud forms but disappears and all is left is a very thin layer of liquid nitrogen. As all the rest, this is a chemical reaction.

At the beginning of this video there is a long wait. After that you can actually see some bubbles start to form and the bubbles start rising and at one point the jar overflows. The really interesting thing i noticed the more time passed by, the darker the color got of the overflowing liquid. After that there were overflows but instant ones. Like bubbles popping. This is also a chemical reaction because this cannot be returned into original state.

http://www.youtube.com/watch?v=_Pk6s1MbszA&feature=related
This video was kinda unclear so I will do my best to explain it. The moment he puts the gummy bear the gummy bear next to the tube lights on fire. This intense fire lasts for a pretty long time and finally calms down and returns to its starting position. This is once again a chemical reaction.


fter the glass was put under the light and all the needed materials were included (salt crystals, turpentine, food dye) you have to wait 2-5 seconds for the chemical reaction. When it actually happened, I was startled. To me, it looked like some magical moisture and you could actually see the water moving magically. I also noticed there was a sort of gas released from the top of the glass of water. This is once again a chemical reaction, a magical one.

1 comment:

  1. I agree with you, this is definetly the coolest and most interesting video. I like how the crowd is watching, and once the liquid nitrogen is thrown into the water, it seems as if there is a cloud that covers the whole pool. The person that jumped into the pool is crazy. This is a chemical reaction because it cannot be brought back to its previous stage, and the change has not been made physically.

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