Chemistry

Chromatography: Separating Mixtures Introduction: Magic bulls eye inks are often miscellaneas of some(prenominal) compounds. newspaper chromatography is a common method of separating various comp atomic number 53nts of a diverseness. after(prenominal) separation, you flock observe the different simulations that absorb up a particular color of magic scar ink. You can also calculate a ratio Rf, which compares how farthest distributively compound travelled to how far all(prenominal) answer (substance that dissolves some other substance) traveled during the experiment. Rf = Ds/Df Ds = perspective traveled by the compound Df = Distance traveled by the resultant Materials: drinking chocolate filter, faucete, rubbing alcohol, piddle, 3 different color magic markers (not permanent); 3 identical tall, narrow drinking specs; metric ruler, 3 pencils Pre-lab Questions: 1. List one extensive and one intensive post of marker ink . Intensive-color Extensive-volume 2. Define mixture. Mixture contains dickens or more(prenominal) different substances which are only physically bonded.  3. Is tap water a heterogeneous or undiversified mixture? pardon your answer. Heterogeneous, It contains ions, dissolved gases, bacteria, etc.

But unless you are visual perception brown chunkies or sediment floating around in it the water is put away a homogeneous mixture since its components are again immix at a microscopical level. 4. Is rubbing alcohol a heterogeneous or homogeneous mixture? Explain your answer. It is homogenous because you cant see the different part in it Pr ocedure: 1. condense 3 eludings of co! ffee filter. Be sure that the strips are lots narrower and slightly taller than the drinking glasses. 2. In the center the strips, nearly 3 cm from one end, place a dot of the marker to be tested. The dots should be well-nigh 0.2 cm in diam and dark enough to be clearly visible. 3. Place about 2 cm of water in each glass. 4. taping the unmarked end of each strip to the center of a pencil so that the strip hangs down when the pencil is held...If you involve to get a replete essay, order it on our website: OrderEssay.net

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