Discussion: There were some patterns that were noticeable during this experiment. It was noticed that all of the sprays with the metal potassium in them had turned the flame a light pink for a few seconds. The sprays that held the copper in them all turned the flame a vivid green colour‚ with some including green sparks also. Both of the sodium bottles turned the flame orange for a short time. Electrons orbit the nucleus of an atom in energy levels. If atoms are heated up to the point where the
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ions. Materials: Safety glasses 10 test tubes Test tube rack Paper Pencil 50 mL beaker Bunsen burner Nichrome wire Barium Nitrate Copper Nitrate Strontium Nitrate Lithium Nitrate Potassium Nitrate Sodium Chloride Calcium Nitrate Unknown solutions A‚B‚ & C Hydrochloric Acid Wash bottle (with distilled water) Procedure: 1. Label the test tubes with the names of the solutions and unknowns. 2. Place about 5 mL of each solution into each test tube‚ and 10 mL of Hydrochloric Acid into
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solution of sodium carbonate into a conical flask. Add two or three drops of methyl orange indicator and titre this solution with KA1. Readings are recorded in the table. The titration is repeated three times to achieve accurate results. Results: Titration number | Rough | Accurate | | | 1 | 2 | 3 | Final reading/cm3 | | | | | Initial reading/cm3 | | | | | Volume of KA1/cm3 | | | | | Mass of beaker + sodium carbonate= _________________ Mass of empty beaker
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multiply that number by g‚ 9.8‚ to find the blocks’ weights in Newtons and record it. Plug the force sensor into channel 1 of your LabQuest 2‚ this allows you to calculate the amount of force that you pull the block with. Choose six of the slotted masses to place on the blocks‚ a different one each trial. After choosing which slotted masses you are using convert their mass to kilograms and multiply by g‚ 9.8‚ to find their weight in Newtons. For each of the six slotted masses add their Newtonian weight
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The catalase test is used to differentiate staphylococci (catalase-positive) from streptococci (catalase-negative). The enzyme‚ catalase‚ protects the bacteria from the toxic by-products of oxygen metabolism. This enzyme is produced by bacteria that respires using oxygen. The catalase-positive bacteria include strict aerobes. Catalase-negative bacteria may be anaerobes‚ or they may be facultative anaerobes do not respire using oxygen as a terminal electron acceptor. The test reaction is very fast
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lowest amount of energy with long wavelengths and a shorter frequency. Hypothesis: If you observe the characteristic emission spectra of several gases and
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SELECTION TEST (PSYCHOLOGICAL TEST) A psychological test is an objective & standardized measure of a sample behavior from which inferences about future behavior & performance of the candidate are drawn. Tests provide a systematic procedure for sampling human behavior. These test are based on the assumption that no two individuals are equal in terms of intelligence‚ attitudes‚ personality‚ & other relate traits ones characteristics with others are measured through these tests. Types of Selection
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monosaccharide opens to form a chain‚ the result can be divided into two which is an aldehyde or an ketone. Sugars that are aldehydes are known as aldoses. Sugars that are ketones are known as ketoses.Glucose and galactose are example of aldoses while fructose is an example of ketoses.There are few test can be done for testing these sugar to show or prove are they reducing sugar or non reducing sugar.Example of the test that can be done is Benedict test. 1 In plant‚glucose is
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amounts of glucose‚ amino acids‚ urea‚ and salts in urine. To test this we used different chemicals that would react with one of the four items above showing either a high concentration or low concentration within the urine. By using a solution called silver nitrate we could test whether or not salt was present in the urine. If the urine turned a cloudy white after adding the silver nitrate the urine had a high concentration of salt. To test for amino acid we used a chemical called biuret solution. If
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Results and Conclusion of Research Process Paper HCS/465 September 23‚ 2012 Regan Parks Results and Conclusion of Research Process Paper In my week two assignment an article entitled Changes in fitness‚ body mass index and obesity in 9-10 year olds was used and this same article will be used again for this article. The topic for the week two paper was about the background and methodologies of this article. Now in the week three paper the topic will be about the results and conclusions of this
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