Clemens,+Royce


 * __Reading Assignment #1__**

Before reading, I know that motion sensors can be used in the military to determine where enemies are within a certain radius. A second thing I know is that motion sensors only pick up on light, or movement. A final third thing I have knowledge of about motion sensors is people use them in their garages to turn on and off lights. One thing that I learned is that a photo sensor is anything that senses light. A second thing I learned is that light is actually electromagnetic radiation in ultraviolet/visible rays. The third thing I learned is that an eye is also a type of motion sensor because it uses light to initiate vision.

Royce, Yes. It is interesting to think of your eye as a motion detector. 5 stars. MW

Royce,

OK - but this is not under the introduction to chemistry articles.


 * __Video and Post (DISTILLATION) #1__**

A piece of information i didn't know about Distillation is that distillation is actually the process used in science, to seperate atoms and molecules in a mixture. I found it interesting that fractional distillation is a form of distillation. Fractional Distillation is when you break the distillation process down even further. There can be "fractions" of vapor left in certain columns. In the more complex/professional chemistry labs, a Bunson Burner is used. This relates to class because in class we also use Bunson Burners to heat certain elements and solutions.

Royce, Spot on! I liked your reference to fractional distillation! 5 stars. MW


 * __Reading Assignment #2__**

Before reading, I know that when you put mentos into a 2 Liter bottle of soda, it will erupt. I also knew that the eruption that will be taking place will be greater than just a foot, not a small height. A third thing I already knew before reading this article is that the reason the bottle erupts is because of a chemical reaction, although I am not sure which chemicals. One piece of information I learned is that how much CO2 that one can disslove souly depends on how much force, or pressure, pushing down on the solutions surface. A second thing i learne is that when you unscrew the lid of a soda bottle, there is a drastic change of pressure, and than causing a supersaturated solution. The third thing I learned is that when the soda is at a higher temperature, the more it will lose its 'fizz'.