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so sleep alone tonight
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This blog was opened by (SOPHIAARON) to accomodate (SOPHIA)'s Science journal.Do enjoy your stay here, and don't take what's not yours! tagboard
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-------------Physics------------Liquifaction. How to get out of a quicksand. Math Definitions : What Is Terminal Velocity. Newton's 3 laws of motion. Titration Technique using a burette How to use a pipette. Indroduction to Frictional force. Tacoma Bridge Collapsed! ---------------Chemistry---------- Forensic Video Periodic table song(: Crystal structures: graphite and diamond Chromotography- Separation of MIxtures Separation: Iron from Salt & Sand Mixture Steam Distillation Fractional Distillation Video Video Video Video Video Video Video Video Video Video Video Video Video credits
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Chemistry- 16
There are different types of purification/ separation methods to separate mixtures: -Filtration -Using Magnets -Distillation -Fractional distillation -Evaporation to Dryness -Crystallisation -Paper Chromotography --------------------------------------------------------------------- *I will only blog on some points* Filtration: Filtration is a technique used either to remove impurities from an organic solution or to isolate an organic solid. The two types of filtration commonly used in organic chemistry laboratories are gravity filtration and vacuum or suction filtration.  A solid which has not dissolved in a liquid can be separated by filtration.A filter paper is placed inside a glass funnel and a container put beneath. The solid remaining in the filter paper is called the residue.The residue can be dried by spreading it out on the filter paperand allowing the liquid to evaporate.The liquid which has passed through the filter paper is called the filtrate. --------------------------------------------------------------------------- Distillation: Distillation is a method of separating mixtures based on differences in their volatilities in a boiling liquid mixture. Distillation is a unit operation, or a physical separation process, and not a chemical reaction.  -------------------------------------------------------------------------- Fractional Distillation: Fractional distillation is the separation of a mixture into its component parts, or fractions, such as in separating chemical compounds by their boiling point by heating them to a temperature at which several fractions of the compound will evaporate. It is a special type of distillation. Generally the component parts boil at less than 25 °C from each other under a pressure of one atmosphere (atm). If the difference in boiling points is greater than 25 °C, a simple distillation is used.  ---------------------------------------------------------------- Crystallisation: Crystallization is the (natural or artificial) process of formation of solid crystals precipitating from a solution, melt or more rarely deposited directly from a gas. Crystallization is also a chemical solid-liquid separation technique, in which mass transfer of a solute from the liquid solution to a pure solid crystalline phase occurs. ----------------------------------------------------------------- Paper Chromotography: Chromatography is used to separate mixtures of substances into their components. All forms of chromatography work on the same principle. 
references: http://orgchem.colorado.edu/hndbksupport/filt/filtration.html http://images.google.com.sg/imgres?imgurl=http://www.gcsescience.com/Filtration.gif&imgrefurl=http://www.gcsescience.com/e5-filter-paper.htm&usg=__fWR6KhCb2IXvMWvLy5V_QliKB2Y=&h=270&w=250&sz=4&hl=en&start=6&um=1&tbnid=8Dyol0RaENwNLM:&tbnh=113&tbnw=105&prev=/images%3Fq%3DFiltration%26hl%3Den%26sa%3DX%26um%3D1 http://en.wikipedia.org/wiki/Fractional_distillation http://en.wikipedia.org/wiki/Distillationhttp://en.wikipedia.org/wiki/Distillationhttp://en.wikipedia.org/wiki/Distillationhttp://en.wikipedia.org/wiki/Distillation http://en.wikipedia.org/wiki/Crystallization http://www.chemguide.co.uk/analysis/chromatography/paper.html |
