A flame test is conducted when an element is burned and the flame produces a color different the starting flame color. When the coffee stirrer was put into the flame‚ the element’s atoms (from the solution of the stirrer) left the original level of energy. When the atoms fell back to ground level‚ they released photons in the form of colored flame. Using the flame test‚ unknown compounds can be identified when they are burned since each element has a specific color. (Douma‚ 2008). The color
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A metal is a solid material which is either an element‚ a compound or an alloy. Metals share some common properties like being typically hard and shiny‚ and that metals are good electrical and thermal conductors. They are generally malleable‚ fusible and ductile. In a periodic table of elements‚ there are six groups of metals and two of them are the most common. It is the Alkali Metals and the Alkaline Earth Metals. Alkali metals comprise the group 1 elements. They are similarly shiny‚ soft
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Lab Questions: Are flame tests valuable for detecting metal ions present in a mixture of metal ions? Flame test may not be valuable for detecting individual metal ions present in a mixture of metal ions. Although each metal ion emits a different color of light‚ which corresponds to a certain wavelength of
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What is urodynamic testing? Urodynamic tests are done to determine how well your lower urinary tract is working. The lower urinary tract includes your bladder and the tube that empties your bladder (urethra). When your kidneys filter your blood‚ urine is stored in your bladder until you feel the urge to pass urine (urinate). Urination requires coordination between the nerves and muscles of your bladder and urethra. When your lower urinary tract is working well‚ you should be able to: Start urinating
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Abstract --- Reutilization of waste materials in the building industry helps to prevent environmental pollution whilst contributing to the design of more economical buildings. Over the years‚ there has been increase in the accumulation of tyre rubber due to the increase in the production of vehicles. Sometimes this waste tyre rubber is burned which leads to environmental pollution. So the use of this type waste tyre rubber for the replacement of aggregates in concrete leads to the decrease in the
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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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TENSILE STRENGTH TEST ENGINEERING PRINCIPLES ASSESSMENT TWO Alan Tait PLAGERISM I can confirm that all works contained in this report are my own. My sources are from information and data collected from experiments carried out in the class. I understand that if the work in this report is deemed not to be my own then it shall be rendered void. Signed______________________________________ INTRODUCTION As a class we were given a piece of mild steel with the following dimensions-a
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The Charpy impact test‚ also known as the Charpy V-notch test‚ is a high strain-rate test which determines the amount of energy absorbed by a material during fracture. The Charpy test specimens were made according to the dimensions of standard ASTM A370. One of the main reasons for concern for natural composites laminates generally is the low values
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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 stored as the polysaccharide starch.Example of food that rich in starch is oat‚cereal‚rice and corn.Starch can be divided into
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The Urea test was used to test both Unknown Gram-positive and Unknown Gram-negative bacteria. One colony of bacteria was used from the Unknown 13A plate and Unknown 13B plate in order to inoculate the Urea Slant. After the slant was inoculated‚ the cultures were placed in an incubator at 35ºC for Gram-positive bacteria‚ and 37ºC for Gram-negative bacteria for a total of 48 hours. If the Urea test were positive‚ the color of the slant would have changed to a hot pink color‚ which indicated the bacteria’s
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