Chemical substance

Purpose: We already knew that the chemical properties of each pure substance are not are not changed after separation in a mixture. The key to find a physical property that one part of the mixture does have but the parts of the mixture doesn’t. In magnetism a magnetically susceptible material is extracted from a mixture depending on a magnetic force. Filtration is separation of an insoluble solid and a liquid. Filtration depends on solubility, the filtrate is the one want to keep (liquid) and…

this experiment was to ascertain an unidentified substance. The substance in question was a colorless liquid with an odor resembling acetone. To start with the Tollens’ test was conducted on the unidentified substance to differentiate between an aldehyde and a ketone. The results of the test were negative. This indicated that the substance under consideration was a ketone The next step consisted of determining the melting point of the substance, which was in the range 99°C-102°C, which was…

According to the average density and the boiling point of the experiment, the probable identify liquid of M4C is Propanol (Isopropyl alcohol), with the density value is (0.788 g/mL) and boiling point is (82.67 *C) compare with the literature value of density (0.785 g/mL) and the boiling point (82.4 *C), which Propanol (Isopropyl alcohol) should be the liquid of M4C. The Propanol (Isopropyl alcohol) has no color. The key of identify the unknown is the boiling point and the density, because if…

The Horizon chemical company discovered that its product (Cleanflo), sold for the purpose of cleaning dairy apparatus, also was extremely effective in dissolving the calcium deposits, which clogged catheters that had been removed from the body. Consequently, the Horizon…

In the June 2015 Smithsonian magazine, there is an ad for the Huntsman Cancer Institute. The organization is devoted to educating, treating, and researching cancer. One finding that they have found. is that all cancers are genetic base They are striving to prevent cancer before it starts. The ad looks professionally made and an excellent representation of the Huntsman Cancer Organization. It has a great deal logos and ethos, but only a small amount of pathos. The primary audience is…

1-Paper 2-gallon size Zip- Loc bag 3-Iodine beads (available from forensic supply companies) Note: Iodine crystals can be used along with a small amount of powdered vermiculite. 4-Rubber or plastic gloves are recommended 5-Safety glasses or goggles Safety Precautions Firstly,Wear safety glasses or goggles to protect our eyes from iodine vapors. Iodine is very toxic in nature , both as vapor and through excessive skin contact. Work in a well ventilated area is necessary. We must Keep all…

that make it up on a picture representation. It is not as uncomplicated as observing the physical substance. Test Tube A consisted of small black and white specks that could phyically be seperated when holding a magnet to the mixture. Because this is possible, it is a heterogenous mixture also because the seperation can easily be seen. Test Tube B is a homogenous mixture because another substance was dissolved into the water. Since it was dissolved, the molecules were spread out evenly. You…

The Critical Noncarcinogenic effect of acrylamide is classified as “Degenerative Nerve Changes”. This means that chronic ingestion of acrylamide resulted in an observable damaging of the central and peripheral nervous system, thus classifying it as a neurotoxin. This conclusion was determined after the results of two separate chronic (2year) drinking water studies performed on lab rats. (Friedman et al., 1995, 224307; Johnson et 14 al., 1986, 061340). The doseresponse data for acrylamide was…

The motivation behind this experiment was to gain insight behind the theory and practice of two laboratory techniques: solubility-dependent extraction, and recrystallization, in an effort to isolate and identify three compounds originally dissolved in a mixture. Extraction is used to isolate a specific compound. Recrystallization involves taking a crude compound and removing unwanted impurities so that a more accurate melting point can be taken, leading to a more precise identification of a…

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