LIne Spectra

Yesterday in Chemistry class we performed a lab were we got to look through a kaleidoscope at  spectra tube. Taking the kaleidoscope we were to look at the light and draw the colors we saw. This was to help us learn the difference between a continuous, emission, and absorption spectra.




Looking at regular light we saw what a continuous spectra was. It was basically all the colors blending into one another as you looked across it.




Next we looked at the Absorptions Spectra. Which was the same as the continuous spectra but some colors like orange had black over it because the energy was absorbed.

Last we looked at the Emission Spectra. This was were we were only able to see a few lines of colors
We were shown Hydrogen, Neon,  and Mercury.

Hydrogen

Neon

                                    Mercury

PIctures

http://intro.chem.okstate.edu/AP/2004Norman/Chapter7/Emission.html

http://astro.unl.edu/naap/hr/hr_background1.html

http://www.astronomyknowhow.com/hydrogen-alpha.htm

http://www.jce.divched.org/JCESoft/Issues/Series_C/6C1/prog3-6C1.html

http://www.jce.divched.org/JCESoft/CCA/CCA8/SampleUseOfMovies/CJM/8_01_9_5_4_.html

http://www1.assumption.edu/users/bniece/Spectra/Complete.html

Atomic Structure Assessment

Ink Separtaion Technique

Today in Chemistry class we performed an experiment where we used ink chromatography to watch the paper to separate the pigment found in ink samples. We first drew a design on the filter paper using marker. Ours were a tribal flower , a heart which was colored in with permanent maker,and a series of crosses. We than poked a hole in the middle and put a rolled piece of paper towel through it. Than we placed the tip of the paper towel in the water and watched as the water traveled up the paper towel and spread a cross the filter paper.As a result we learned that the different colors used all had different molecule sizes. Blue for example had small molecules so it followed along with the water, and could usually be seen along the edges along with black, and red. The color yellow had thicker molecules so it could be found closer to the middle. As the water progressed the colors mixed together and even made the colors pink, orange, white , and a purplish white cold.


PIctures from Google.com

Separation Lab

Today in Chemistry me and my partner Cynthia traded our mixture with Sam,Joel, and Damian and preceded to separate there mixture of sand, iron, and calcium chloride. First measured the weight of the tray and beaker that we will use to contain the materials. We than preceded to measured the mixture all together and subtracted the weight of the beaker, the original beaker was 413.1g. After this we than separated the calcium chloride from the sand iron by using wire as a way of filtration. Then we set the calcium chloride in a tray aside and used a magnate to separate iron from the sand. We than measured on the scale the sand and iron.

Afterwards we used the filtration technique by putting filter paper in a cone and over a flask and dumped the calcium chloride. After pouring water on top of it the calcium chloride which resulted in it dissolving. Thus separating the little bit of solid from it. As the Calcium Chloride turned into a liquid. we then measure the liquid on a scale and subtracted the the weight of the flask. Thus giving us how much of the calcium chloride was used.

Pics from google