CHEMISTRY

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~Separation Techniques in Chemical Methods~ 1.- Centrifugation~ Definition: Its a process that involves centrifugal force for the separation of Mixtures. Properties: The purpose of centrifuging is to separate a mixture, what centrifugation does is that the more dense part of the mixture goes up (of the test tube) and the less dense goes down, for example blood, when it is normal its all red and same, but at end of centrifugation the test tube finish with the blood in the bottom and a yellowish substance at the top that is plasma. 2.-Evaporation~ Definition:Is the vaporization of a liquid to turn it to gass that way the liquid is separated from the mixture. Properties: The purpose of Evaporation is to separate the water from the mixture, for example a glass of water with sugar by evaporating the sugar will be alone and the water will turn into water vapor. 3.-Sieving~ Definition: It is the process in which varius size particles are dry or suspended in a liquid. Properties: The process of sieving can be done with a sieve that is a cooking material most likely cook use them to spread the sugar (powder) to a cake or one desert, but in this case the things that do not traspass are the other thing of the mixture so the little things that pass are separated for example wet sand and rocks, the sand will pass throw and the rocks will stay.

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Homework~Describe the importance of Alloys and Plastics in Society. Alloys: They are necesary for construction and transportation because they can create hybrid metal, by changing 2 other metals, and hybrid metal are stronger and durable.

Plastics: Plastics have a very importance in our society, is very hight because almost all things are made up of plastics for example glass containers we ussually use for school, plastic bags that most of people get when buying in a supermarket, and other things to make things get easier.

media type="custom" key="3999607" Chlorine Power Point Presentation ~Bruno Stromsdorfer~