6.2 Vocab Black pepper- dried pepper berries that have been grinded into a grain High sodium food-salty food Iodized salt- Table salt Kosher salt-salt without additives Monosodium Glutamate-not actually salt‚ but used in the same way Rock salt-generally not used for consumption Sea salt-made by evaporating sea water Seasonings- ingredients you add to food to improve flavor Sodium chloride-salt Table salt-salt that is refined to remove impurities White pepper- used for light colored
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blood‚ some vitamins‚ and so on. There are 92 naturally occurring elements on earth but only eight elements make over 98% of the minerals on the Earth’s crust. They are‚ in decreasing quantity‚ 1 oxygen‚ 2 silicon‚ 3 aluminium‚ 4 iron‚ 5 calcium‚ 6 sodium‚ 7 potassium‚ 8 magnesium. Approximately 112 minerals have been identified‚ and are listed on chemical charts called periodic tables. Minerals are essential for good health and for growth and just the right amounts of minerals in our diets are
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M. S. Ntamila and A. Hassanali University of Dares Salaam P.O. BOX 35061 Tanzania kolation of Oil of Clove and Separation of Eugenol and Acetyl Eugenol . An instructive experiment for beginning chemistry undergraduates chloride‚ and hydroxamic ester tests‚ and the preparation of the henzovl derivative of eupenol. Finally‚ ir spectra of the two components are examined‚ and the information ohtained comoared with that from chemical tests. Practical Detalls Crush about 30-35 g of cloves with pestle
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the second plate (the sample plate)‚ you will spot Naproxen sodium as an additional standard and four commercial analgesic preparations in order to determine their composition. Two methods of visualization will be used to observe the positions of the spots on the developed TLC plates. First‚ the plates will be observed while under illumination from a short-wavelength ultraviolet (UV) lamp For a second means of visualization‚ iodine vapor will be used Hypothesis I predict that the polar substance
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are present in each solid. Various substances (paraffin wax‚ sucrose‚ sodium chloride‚ tin‚ and silicon dioxide) were experimented and identified with tests for hardness‚ solubility‚ conductivity‚ and the time for the solid to melt with a candle and Bunsen burner. The substances were identified according to their properties. Paraffin wax was identified as a non-polar covalent solid‚ sucrose is a polar covalent‚ sodium chloride was acknowledged as an ionic solid‚ tin is a metallic solid‚ sand is a
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Classification is based mostly upon solubility tests. If the compound is water soluble‚ test the aqueous solution of your compound with pH paper (also check the pH of the original water). If the compound is water-insoluble and it dissolves in 5% (1.5M) sodium hydroxide and 5% NaHCO3 solutions as performed in your solubility tests‚ it can be classified as a carboxylic acid. Establish an equivalence value for the unknown to estimate its molecular weight. The equivalent weight or neutralization equivalent
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Chemistry : Important Questions For CBSE Class XII ( Haloalkanes and Haloarenes) (Q.1) Choose the incorrect statement about the benzyl chloride: ( 1 mark ) (a) It is less reactive than alkyl halides. (b) It can be oxidized to benzaldehyde by boiling with copper nitrate solution. (c) It is a lachrymatory liquid and answers beilstein’s test. (d) It gives a white precipitate with alcoholic silver nitrate (Q.2) Dry ether The reaction RX + 2Na + RX _______________? R-R + 2NaXis called. ( 1 mark
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Experiment 1: "A cis to trans conversion" Saturday‚ June 25‚ 2005 4:19 PM Notes on Theory • Alkenes o They are hydrocarbons with a C=C double bond • Double bonds are stronger and more reactive than single bonds o Hydrocarbons with double bonds used to be known as "olefins"‚ because they had an oily appearance • "Oleum" means oil • "Ficare" means make • Isomers o Geometric isomers have the same molecular formula‚ but a different geometric arrangement • They also have different physical properties
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forms as more sodium hydroxide was added to the unknown substance the possible cations include: Aluminium‚ Lead (II) or Zinc. Furthermore if a white precipitate forms that does not dissolve as more ammonia solution is added it could mean the cation could be Aluminium‚ Lead (II) or Magnesium. This therefore means that further tests would need to be carried out in order to identify the aluminium. Following the Cation tests we found that sample C was copper as the addition of dilute sodium hydroxide solution
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Naming Chemical Compounds General Information: Scientists all around the globe use a standard method for naming chemical compounds. The standards were set up by an international committee sponsored by the International Union of Pure and Applied Chemistry (IUPAC). Having this standard makes life easier for people who use these compounds everyday. It would be tough to set up any experiment if scientists everywhere used different names for the same compound. It would also make the lab a
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