Chapter 1 * What is Chemistry? -it is the study of the composition of substances and the changes they undergo. * What are the 5 branches of chemistry? * Organic chemistry‚ inorganic chemistry‚ analytical chemistry‚ physical chemistry‚ biochemistry. * What is the difference between a theory and law? -a theory is a thoroughly tested explanation of why experiments give certain results. A scientific law is a concise statement that summarized the results of a broad spectrum of observations
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The novel I chose to write about was called Perfect Chemistry by Simone Elkeles‚ which is part of a series. In this novel‚ one of the main character’s name was Alex Fuentes and he was a teenager‚ Chicano‚ part of the working class‚ a gangster‚ with a single mother and two brothers. The other main character in this novel was a teenage girl named Brittany Ellis and she was Caucasian‚ from a wealthy family‚ has a mother and father‚ and a disabled sister that she needs to take care of. In this novel
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Hong Kong Diploma of Secondary Education Examination Chemistry School-based Assessment Sample Tasks Teachers may use the sample tasks for non-profit making educational and research purposes with proper acknowledgement. © 留 2010 Hong Kong Examinations and Assessment Authority All Rights Reserved 2010 Chemistry School-based Assessment Practical Related Tasks Volumetric analysis Teacher Notes NSS Chemistry Curriculum Link: Time Required: 40 minutes Topic IV Acids and Bases Students
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Broca’s Brain. Sagan‚ Carl. Ballantine Books; Reissue edition February 12‚ 1986. http://antoine.frostburg.edu/chem/senese/101/consumer/faq/harispray-ingredients.shtml http://www.dit.ie/DIT/science/chemistry/rsccomp/competition01/hawkesclancy/bedroom/hairspray.html http://householdproducts.nlm.nih.gov/cgibin/household/ brands?tbl=brands&id=16003315 http://www.madsci.org/posts/archives/feb98/884957935.Ch.r.html http://www.psrc.usm.edu/macrog/ http://www.pg.com/science/haircare/hair_twh_111/hair_twh_111_02
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for another. Just this semester‚ I has math class with an Asian girl‚ I noticed at the end of the day‚ I also saw her in my chemistry class. Towards the middle of the semester‚ I realized I would need help in math as well as her notes from chemistry on the days I won’t be attending. I decided to go up to her after pre-calculus one day to ask if she’s in my 3:40pm Chemistry class‚ to my surprise‚ she told me she wasn’t. I asked her if she was sure because the other Asian looks just like her! She said
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“To acquire knowledge‚ one must study; but to acquire wisdom‚ one must observe.” ― Marilyn Vos Savant “You can’t just be reading books all the time and leave the writting of them to others.” ― Joseph Delaney‚ Night of the Soul Stealer “It does not matter where you go and what you study‚ what matters most is what you share with yourself and the world.” ― Santosh Kalwar “I don’t sing a song unless I feel it. The song don’t tug at my heart‚ I pass on it. I have to believe in what I’m
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SYNTHESIS AND CHEMISTRY OF K2S2O8 ABSTRACT In this experiment‚ a sample of K2S2O8 was prepared by the electrolysis of an aqueous solution of H2SO4 and K2SO4. The peroxodisulfate anion‚ S2O82-‚ was also observed for its ability to serve as a counterion for precipitation by preparing a copper (II) complex by reacting hydrated copper (II) sulfate with ammonium peroxodisulfate in the presence of pyridine. This same ability‚ coupled with its strong oxidizing ability allowed for stabilization of
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incorporated into the inks. Sometimes‚ the color change occurring at a temperature is permanent‚ and at other times the original color can be regained on cooling. Accordingly‚ we have an irreversible or reversible thermochromic system. The required chemistry can be adopted based on the end use. That means one can select an irreversible thermochromic system when a certain temperature crossing is to be monitored and a reversible system when the actual temperature range is to be monitored. The color change
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The pursuit of knowledge carried on by scientists for the past several centuries has produced results over which opinion is sharply divided. Science‚ originally intended to conquer and harness the forces of nature for the good of man‚ is looked upon by some as the chief cause of the suffering of humanity today. On’the other hand‚ there are a good many people who consider science to be the harbinger of all progress‚ prosperity and comfort. The contro¬versy has been raging for a long time‚ though science
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Blood is a necessary component of the majority of living organisms (all vertebrates and some invertebrates); it carries vital nutrients‚ oxygen and proteins to body tissues and carries away waste products. Blood‚ although most commonly red‚ can also be found in such colours as green‚ blue‚ clear‚ pink and violet. However‚ the common misconception surrounding the idea that human blood is blue before oxygenation is false. All human blood is varying shades of red; these wild alternate colours are
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