after physical exercises. The symptoms differ depending on the severity of the individuals‚ thus‚ bronchial asthma is defined as the chronic inflammatory disease which is characterized by bronchial hyper reactivity and variable degree of the airway obstructions (Buhl et al.‚ 2006). The hyper reactivity of the bronchus can be stimulated by such allergens‚ cold air‚ environmental chemicals‚ viruses‚ and aspirin-type drugs. Most of bronchial asthma in childhood is due to allergic factors; meanwhile‚ 30%
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1. When one designs a program from a behavioral standpoint‚ what is the first thing that should be addressed? Within the behavioral model‚ the first thing that should be focused upon is a person’s interaction with his or her environment‚ including the physical setting and social surroundings. As we do this‚ we are able to take the inner behaviors (thoughts and feelings) into consideration‚ while assuming that they were caused by what is occurring in the student’s world. Along with that‚ a focus
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where the metal is in the reactivity series. The more reactive a metal is the slower it takes for it to breakdown. The less reactive a metal is it breaks down faster. Explain the hypothesis using scientific ideas: The metal carbonate which is lower in the reactivity series such as copper can thermally decompose much faster because it is the least reactive metal so its an unstable carbonate and the bonds are much weaker. So the metal that is much higher in the reactivity series such as calcium
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observe evidence of a reaction and to determine the chemical equation‚ if there is a reaction. In order for a reaction to occur‚ a metal strip must have evidence of black or grey deposits on the surface of the metal once dipped into the solution. The reactivity of an element is related to its tendency to lose or gain electrons. Three metal strips that were used are copper‚ lead and zinc as well as the solutions of silver nitrate‚ copper(II) nitrate‚ lead(II) nitrate‚ magnesium sulfate and dilute(3M) sulfuric
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BIO Chapter 2 Study Guide 1-Know the difference between an atom‚ an element and a compound. -Atom-The basic unit of a chemical element. -Element-A unique molecule that makes up all matter and cannot be broken down any further. -Compound- Two or more elements together 2-Understand and be able to apply the concept of the Atomic number and the Atomic mass of an element. -Atomic Number- The number of protons an element has. -Atomic Mass-The number of Protons + Neutrons. *the number of neutrons
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Abstract Tamoxifen‚ most commonly sold under the brand name Nolvadex‚ is the most widely used drug in the treatment of breast cancer during both early and late stages. It belongs to a class of drugs known as SERMs (Selective Estrogen Receptor Modulators). SERMs work by blocking the estrogen receptors in breast cells to prevent any binding with estrogen. It is consumed orally as a tablet or as a liquid (Anon.‚ 2017). The following paper discusses the discovery of Tamoxifen‚ its laboratory synthesis
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chapters together by covering the topic of emotional reactivity. Intentional or otherwise‚ these three chapters could just as very well be included in a book
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TOPIC 2 Metals The History of Metals * Uses of metals through history: * Copper Age (3200-2300 BCE) – copper and tin were most common metals‚ and were used for ornaments‚ weapons and tools. * Bronze Age (2300-700 BCE) – copper‚ tin and bronze were used for tools‚ weapons and transport. They produced bronze by heating copper and tin with charcoal. * Iron Age (1000 BCE – 1 CE) – iron steel and lead was used for tools‚ weapons and pipes. Iron is much harder than bronze.
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Purpose This experiment shows how different concentrations of acids and bases in a solution affect its pH level. When acids and bases are combined in a solution‚ they neutralize each other. This means that depending on the concentration of both acids and bases in a solution‚ the pH will vary. A neutral pH level is 7; anything below that level is known as an acidic solution‚ while anything above is known as a basic solution. To find out the pH‚ the solutions will be diluted and tested with different
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1-Ignites after considerable preheating. 2-Ignites if moderately heated. 3-Can be ignited at all normal temperatures. 4-Very flammable gases or very volatile flammable liquids. The yellow diamond‚ appearing at the right side of the label‚ conveys Reactivity (or Stability) information. The numbers 0 to 4 are also used to rank
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