BPA‚ is a carbon based synthetic compound belonging to the group of diphenylmethane derivatives and bisphenols. The chemical formula for BPA is (CH3)2C(C6H4OH)2. BPA was first synthesized in 1891‚ and was recognized as a synthetic estrogen in the 1930s. The Food and Drug Administration (FDA) approved the use of BPA in 1960 to manufacture certain plastics and epoxy resins. This chemical compound of synthetic estrogen is used to harden plastics and resins‚ while keeping them lightweight. BPA is found
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The Effect of Chemicals on Fire In this lab we got to see the effect of chemicals on fire. We got to. See the flames change to different colors. The size of the colorful flame depended on how the Bunsen burner was turned on. I was sick when we were supposed to have the lab read‚ but I got it read the next day before class. During the lab I made sure to have the correct attired on: my goggles and apron. Ow ill go ahead and tell you five good safety precaution tips. One‚ never leave a lit
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The texts are connected by showing how division of social class leads to an unfair division of power in society. In Mumu Gerasim is a mute‚ tall and deaf serf who has to obey his owner under an unfair division of power. Mumu is about a deaf and mute serf whose life of poverty is brought into sharp relief by his connection with Mumu‚ a dog he rescued The narrator says‚ “The lady‚ his owner‚ had brought him up from the village where he lived alone in a little hut‚ apart from his brothers.” This shows
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Chemical Reactions Lab Objectives: 1. To examine a variety of reactions including precipitation‚ acid-base‚ gas forming‚ and oxidation-reduction reactions. 2. To identify the products formed in these reactions and summarize the chemical changes in terms of balanced chemical equations and net ionic equations. 3. To identify the species being oxidized and reduced in oxidation-reduction reactions and determine which species is the oxidizing agent and the reducing agent. Chemical equations represent
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Chemical changes are irreversible because substances mix and cause a reaction which creates a new substance. Chemical changes can be caused when a substance is combined with a heat‚ water or another substance. Heat can cause a chemical reaction called caramelisation which is when sugar is heated at a high temperature causing it to break down. This gives the sugar a nutty
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Classes of Chemical Reactions Whenever a reaction takes place‚ energy is changed as well when the substances react chemically. Scientists have taken these changes in energy and generalized them. Scientists can take these generalizations and discover more about the nature and tendencies of matter. In this lab‚ the purpose was to perform seven reactions‚ write down their equations‚ and identify the type of reaction. In this lab report‚ several methods of displaying this information will be applied
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conducted. He must than encourage employees to work for a healthier and safer environment. This is achieved by 1. Open communication between both parties. 2. Attending team meetings 3. Training and induction sessions 4. Reading company newsletters‚ flyers or staff notices 5. Talking to your supervisor / manager or other staff. 6. Putting proper sign boards all over the hotel. 7. Spot the hazard identify the jobs or tasks which are likely to happen. 8. Decide on appropriate
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in the history of Southern literature.”(Hedblad) There is no doubt that the Civil War was the most impactful conflict the United States had to face. This war armed brother against brother in bloody battles from 1861 to 1865. The Civil War brought division upon a nation and tested the strength of its people. After fighting the Civil War‚ many Americans reflected on the values that formed the nation‚ placing in consideration whether those values truly represented the ideal United States. Thoughts like
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Industrial Chemical Processes Essay Tan Hung Kai Grade 11 In our present world‚ there are thousands of chemical processes that are being used to produce products that benefits our daily lives. Industrial Chemical processes are used for “transforming raw materials into useful commercial products for society”. (Dr. Philip Britz-Mckibbin Industrial Chemistry: CHEM 2013) Examples of industrial chemical processes include distillation‚ smelting‚ disinfection‚ and Pyro processing. Even today‚ scientists
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of Experiment: Observation of Chemical Changes Purpose: To examine the reaction of common chemicals from household consumer products‚ and the changes they undergo. Procedure: After combining the chemicals listed below in Data Table 1‚ I observed the mixture against white and dark backgrounds by slipping white and black paper underneath the well plate. For every reaction‚ I wrote down the chemical combination‚ the well number‚ and my observations of the chemical reactions against the white and
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