Fireworks Lab Rainbow Chemistry Demonstration

Make a rainbow of colored fire by burning a row of chemicals. Place small piles of the colored fire powder onto a fire-safe surface and connect them to each other by running a strip of paper through the piles of chemicals. When you are ready to perform the project, light one end of the paper and allow it to sequentially burn the piles of chemicals in a colored fire rainbow. Prepare the Paper Fuse Soak a piece of filter paper or coffee filter in a concentrated potassium nitrate solution. Allow it to dry completely before use. Preparing the Color Chemicals This project uses the same metal salts that produce the colors seen in fireworks. Each chemical used as an ingredient should be in finely ground form. If you need to grind a chemical, do it separately from any other chemical (in other words: dont grind the mixture together). Mix the ingredients for each pile by placing them together on a large sheet of paper and rocking the paper back and forth until the pile has a uniform appearance. Dump the pile of chemicals onto the fireproof surface. Use a clean sheet of paper for each mixture so that the colors wont be contaminated. The ingredients are listed as ratios, to be measured in powdered form. Its a good idea to use a small measuring spoon, both to avoid wasting chemicals and to keep the fire manageable. White Fire 7 parts potassium nitrate1 part sulfur1 part antimony sulfide Purple Fire 1 part copper sulfate1 part sulfur1 part potassium chlorate Blue Fire 8 parts potassium chlorate4 parts sulfur2 parts copper sulfide2 parts mercurous chloride1 part copper oxide1 part charcoal Green Fire 12 parts barium nitrate3 parts potassium chlorate2 parts sulfur Yellow Fire 6 parts potassium chlorate2 parts sodium oxalate2 parts charcoal1 part sulfur Red Fire 4 parts strontium nitrate4 parts potassium chlorate2 parts charcoal1 part sulfur Safety Its a good idea to wear a mask when mixing the chemicals to avoid inhaling them. Also, wear gloves to avoid unnecessary skin contact. For the most part, these chemicals are relatively non-toxic. The notable exception is the mercurous chloride. This chemical may be omitted; the resulting flame will still be blue. This project is best performed by persons with chemistry expertise or pyrotechnics experience. Source: Chemical Magic, 2nd Ed., Leonard A. Ford (1993) Dover Publications. Disclaimer: Please be advised that the content provided by our website is for EDUCATIONAL PURPOSES ONLY. Fireworks and the chemicals contained within them are dangerous and should always be handled with care and used with common sense. By using this website you acknowledge that ThoughtCo., its parent About, Inc. (a/k/a Dotdash), and IAC/InterActive Corp. shall have no liability for any damages, injuries, or other legal matters caused by your use of fireworks or the knowledge or application of the information on this website. The providers of this content specifically do not condone using fireworks for disruptive, unsafe, illegal, or destructive purposes. You are responsible for following all applicable laws before using or applying the information provided on this website.

Gender Inequality And The Science Of A Science Based...

Introduction: America provides this allusion that there is always equal job opportunity for everyone. But there is a critical shortage of women in science-based careers, and it ties back to gender inequality and stereotypes. These women feel inferior to men because of a man-controlled field. Scientists are mainly men, with women left to fill the small percentage. The root of these problems are the stereotypes of women being inferior to men throughout history. Women are being left in the race to success in science. Many historically acclaimed women found many phenomenal scientific discoveries are washed away in history, never recognized for their work. This shortage is becoming an epidemic, these women who want to pursue science are†¦show more content†¦Claude Steele, an Emeritus Professor at Stanford, found that when women were reminded of the stereotype that men were better than women at any subject, the performance of women in assignments and tests measurably declined. Since the reducti on in performance came about because women were threatened by the stereotype, this is defined as stereotype threat. This psychological theory brings an understanding of why these women feel compelled to quit their scientific major in college or quit the job itself. The gender gap of women and men is mentally difficult, it causes an epidemic that idea men are better at certain objectives than women is true. This effect will need to be treated to have women want to go into science-based careers. Historical Implications and Benefits of Women in Science-Based Careers Women have been criticized for working in certain fields for decades. The earliest change and promotion of women in work, is the poster â€Å"We Can Do It!† by J. Howard Miller. This propagandist poster appeals to the women on the homefront to fill the labor jobs that the men left as they were recruited in World War II. As women were encouraged to take wartime jobs in defense industries, they became a celebrated symbol of female patriotism. The Artist J. Howard Miller create â€Å"Rosie the Riveter† to represent the women in the workforce, compared to the stereotypical â€Å"housewife†. Miller wished women to see this poster, and believe that they areShow MoreRelatedThe Dilemma Of Masculinity Versus Career Paths1702 Words   |  7 PagesSince the 20th century, there has been the dilemma of masculinity versus career paths. Women were expected to be teachers, nurses, etc., just because that s the role they had in society for decades before that. Men, and still are, expected to go into a career field that pays a lot of money so they can provide for their families. Those career fields are still usually STEM related. 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The Case of Physician Disclosure of Information Free Essays

Any medical information especially those which are involved in the practice itself or in the process of medical operations are just as important, or shall we say critical, as the information needed in an investigation by the police or the testimonials needed by lawyers in court or just any kind of information the human’s inquisitive minds require in understanding things. The on-going debate regarding the disclosure of physicians’ information which includes disciplinary records, hospital privileges and most especially the disclosure of medical errors, has yet to come to a close. Scholars and experts from different universities and institutions have been reviewing a lot of published related literature with the goal of coming up with the right decision regarding the case (University of Iowa, 2006). We will write a custom essay sample on The Case of Physician Disclosure of Information or any similar topic only for you Order Now According to Science Daily (2009), although a lot of physicians have gone to protest, still some have been participating in the investigation by joining surveys and focus group discussions that would contribute to the study’s progress. It is the right of the physicians to disagree with what the study is proposing. At one point, records of errors which possibly may not be caused solely by the practitioner, is not enough for clients to use as judgment for the physician’s capability. In addition to this a study has shown that the lack of feedback when sending to report systems is one of the main reasons why doctors are not motivated to disclose their errors (bio-medicine. org, 2006). Given the fact that the experts who are primarily involved in the situation have already expressed thoughts regarding the case, it is still anybody’s responsibility to reveal important information especially the ones needed in the process of investigating what went wrong. According to Lauris Kaldjian, M. D. , Ph. D. , associate professor of internal medicine in the UI Roy J. and Lucille A. Carver College of Medicine, â€Å"The patient should be the main fous of the physician, but when a medical error has occurred, the professional involved is also to be considered† (bio-medicine. org, 2006). The physicians themselves as well as the hospitals, through disclosing information, should inform their clients well to be able to work closely with them in providing medical care. The Hillsboro Area Hospital could be an example as the details and affiliations of each physician can be accessed by clients through their website (. hillsboroareahospital. org, 2008). References: University of Iowa (2006, August 3). Studies Examine Physician Disclosure Of Medical Errors. ScienceDaily. Retrieved June 9, 2009. http://www.hillsboroareahospital.org/physiciandisclosure.php How to cite The Case of Physician Disclosure of Information, Papers