Chemistry

Chromatography: Separating Mixtures Introduction: Magic bulls eye inks are often classifications of some(prenominal) compounds. authorship chromatography is a common method of separating various comp atomic number 53nts of a change. later separation, you undersurface observe the different disguises that absorb up a particular color of magic scar ink. You can also calculate a ratio Rf, which compares how farthest to each one compound travelled to how far each answer (substance that dissolves another(prenominal) substance) traveled during the experiment. Rf = Ds/Df Ds = empower traveled by the compound Df = Distance traveled by the root Materials: drinking chocolate filter, topplee, rubbing alcohol, piddle, 3 different color magic markers (not permanent); 3 identical tall, narrow drinking glass; metric ruler, 3 pencils Pre-lab Questions: 1. List one extensive and one intensive post of marker ink. Intensive-color Extens ive-volume 2. Define mixture. Mixture contains cardinal or more(prenominal) different substances which are only physically bonded.  3. Is tap piss a heterogeneous or undiversified mixture? pardon your answer. Heterogeneous, It contains ions, dissolved gases, bacteria, etc.

But unless you are beholding brown chunkies or sediment floating around in it the water is put away a homogeneous mixture since its components are again immix at a microscopic level. 4. Is rubbing alcohol a heterogeneous or uniform mixture? Explain your answer. It is homogenous because you cant see the different part in it Procedure: 1. condense 3 ! publicizes of coffee 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 most 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 climb essay, order it on our website: BestEssayCheap.com

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