Corrosion Let metal sit surrounded by oxygen for a while and the metal will corrode. Corrosion is the chemical reaction that takes place when a metal is in contact with oxygen. The metal reacts with the oxygen to form a compound called an oxide on the surface of the metal. The metal becomes tarnished and loses its shine. Metals high in the reactivity series (an observable series of metals‚ in order of reactivity from highest to lowest) corrode more quickly than less reactive metals
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Ordinary Portland Cement. (b) What are the main compounds into which the above oxides will transform in the process of fusion?. 2. (a) Explain the phenomenon of bulking of fine aggregates and its practical significance in mix proportioning. (b) Explain Alkali-aggregate reaction and its effect on the final product of concrete. 3. (a) List out various field and laboratory tests that are conducted to assess the properties of fresh concrete. (b) Explain Compaction Factor test describing the test equipment
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was left to heat for approx. 25-30 minutes. 9. The solution was then left over the weekend to dry out. Results: Conclusion: Hydrochloric Acid (HCl) + Sodium Hydroxide (NaOH) = Sodium Chloride (NaCl) + Water (H2O) (acid + alkali = salt + water) In conclusion‚ the same amount of HCl mixed with NaOH forms an ionic bond between the two elements. The ionic bond/electrovalent bond that was formed was that of sodium chloride ‘salt’. The bond made visible salt crystals in the
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Flame Test Laboratory Report Introduction The purpose of this lab is to observe and identify metallic ions‚ using flame tests. The traditional flame test originated when Robert Bunsen invented the Bunsen burner to test two new alkali metals he and his partner had discovered. “A flame test is an analytic procedure used in chemistry to detect the presence of certain elements‚ primarily metal ions‚ based on each element’s characteristic emission spectrum” (Flame Test 1). Using this test‚ an element
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making soap. Then in 1823‚ another chemist‚ this one French‚ discovered the chemical nature of ingredients of soap. Within soap there is a mixture of sodium or potassium salts of fatty acids which comes from oils or fats by reacting them with an alkali at 80°–100 °C in a process known as saponification. Soap molecules happen to be similar to oil molecules which are long and stringy but soap molecules have different ends. The front end of the soap molecule attracts water which makes that side hydrophilic
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PHYSICAL PROPERTIES OF THE PERIOD 3 OXIDES These pages explain the relationship between the physical properties of the oxides of Period 3 elements (sodium to chlorine) and their structures. Argon is obviously omitted because it doesn’t form an oxide. A quick summary of the trends The oxides The oxides we’ll be looking at are: |Na2O |MgO |Al2O3 |SiO2 |P4O10 |SO3 |Cl2O7 | | | | | |P4O6 |SO2 |Cl2O
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 Dissolved (soluble) Impurities Organics Volatile Organics (VOC) Biodegradable Compounds (BOD; FOG) Refractory or Persistent (eg. Phenols) Inorganics Metals (as salts) Nutrients (N‚ P) Sulfur (as -SO4‚ S-) Acids/Alkalis  Color (can be colloidal or dissolved) Crude Oil Impurites Since the types of waste generated from crude oil processing is accompanied with the crude oil‚ a discussion of these impurities is included. All crude oil contains impurities
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circumstances in terms of palatability‚ cost‚ comorbid medical conditions‚ and cultural eating habits. Reporting any signs or symptoms of an infection or an inflammation. Preventing infections through good hygiene practices. Monitors monthly albumin level. Alkali therapy usually consists of sodium bicarbonate or sodium citrate (citrate is rapidly
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ONE-SCHOOL.NET Short Notes: Form 5 Chemistry Rate or Reaction Calculation Rate of Reaction (Average Rate) Rates of reaction = Quantity change of reactants/products Total time for the reaction If the quantity change is immeasurable Rates of reaction = 1 Total time for the reaction Find the Rate From a Graph Average Rate Rates At an Instant The rate of reaction is equal to the slope of the graph The rate of reaction at an instant‚ t‚ is equal to the of quantity against
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Periodic Table The periodic table is a table‚ where all known chemical elements are arranged. They are organized on the basis of their atomic numbers‚ electrons and chemical properties. The atomic of an element is the same as the number of electrons or protons in that particular atom. They elements in the table are placed in order from the lowest to the highest. 429768018669000The periodic table is ordered into periods and groups. A row of elements across the periodic table is calleda a period
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