Decomposition of Hydrogen Peroxide Experiment

Decomposition of Hydrogen Peroxide Experiment A catalyst is a substance that makes a chemical reaction speed up or get faster. This can be things like the temperature, concentration, sold or even liquid, (bbc,2017). A catalyst essentially effects a chemical reaction, (bbc2017). For a chemical reaction to start the bonds must be broken for the reactants to fuse or react, (bbc,2017). To break the said bonds one needs energy, (gcse,2017). The name of the energy that breaks the bonds is called activation energy. When a chemical reaction happens the bonds of the reactants break (due to activation energy). After this the energy, must flow through a path for the reactants to react, (gcse,2017). Now because of the activation tacking up energy there can only be at one speed, (gcse,2017). When we add a cat list to this it creates an alternate pathway or a short cut for the energy to pass by. This is because the normal pat way is less effectiveGCSE,2017).ÂÂ   The diagram below shows a reactant going through a normal path way and on th at is going through on of a catalyst.ÂÂ   As you can see the rout of the normal path way is very tedious and long. Whereas the rout of the catalyst is much shorter. Types of catalyst A catalyst can be spilt into two main types. The first is the homogeneous. A homogenous catalyst is one that stays the same phase. The meaning can be found in the first part of word, this is Homo which means one or the same. Pretty much a homogeneous catalyst stays in the same phase, (chemguide,2017). Heterogeneous reactions are reaction with different phases. As Hetero means, different, (chemguide,2017). What is a phase? To explain this, we must first look at a mixture. Lets say that there was a stone in water. The stone was a solid and the water was a liquid. This represented a heterogeneous reaction. Now the same thing happened but there was no stone would be a homogeneous. The diagram below shows the different types of catalysts. (chemguide,2017) for the text and the diagram below. The catalyst it is shone that oxides work the best as catalyst. Aim: The aim or this experiment was to see what chemical was to see which catalyst would work the best in speeding up the decomposition of hydrogen peroxide. Hypothesis: Research suggest that iron nitrate will cause a violent exothermic reaction. With the materials, the group had this catalyst would have worked the best. Materials: 4 beakers 4 watch glances 2 stopwatches 1 spatula 1 scale Hydrogen peroxide Iron nitrate Manganese chloride Basic sault Measuring cylinder Method: The first item that were acquired were the personal protection equipment or ppe. The ese items consisted of safety glasses, rubber aprons and the disposable gloves. After this we collected out materials and went to the steel takes outside. A there were no power points we had to set the scales up inside at a free plug point. After the cake was set up we tested the decomposition of hydrogen peroxide without a catalyst. To do this we poured 25 ml of hydrogen peroxide in a beaker. After this 3the group timed the reaction with a stop watch. After the reaction was finished the results were recorded. This same experiment was done 4 time and all yielded the same result of two minutes. After this iron oxide was added to the hydrogen peroxide. This experiment was timed and done 3 times. The same was done with the other catalysts. All the catalysts were pounders. We measured them to .5-gram ad them added them into to the hydrogen peroxide. Possible risk solution Risk level Glass breakages Handle glass safely and walk with caution. medium Chemical Spills Be aware or your surroundings and handle with care. high Ingestion of chemicals Be sure not to ingest chemicals in this experiment. high Burn from and exothermic reaction Stand at a safe distance from the reaction always be alert high Chemicals come into contact with eyes Always keep safety glacises on as these devices a made to prevent chemicals going into the eyes high Catalyst First experiment Second experiment Final experiment iron nitrate 7.11 seconds 8.22 seconds 7.87 Basic sault 22.79 seconds 22.76 seconds 22.77 seconds Potassium Nitrate 19.22 seconds 14.12 seconds 17.89 seconds Manganese Chlorine 31.53 seconds 33.15 seconds 32.58 seconds Full results Experiment averages and observations Catalyst Average seconds Observation during the reactions Iron nitrate 7.69 Rapid exothermic reaction resulting in colour change and bubbling of the liquid. Basic sault 22.77 The mineral dispersed and did not make a noticeable change Potassium nitrate 17.07 Not a noticeable change but the crystals dispersed rapidly. Manganese Chloride 32.42 Made a chance but a very small one, this test was only a small bit faster than the normal reaction Discussion The experiment, The decomposition of Hydrogen Peroxide, provide very interesting results. The task was to aid the reaction by the addition of a catalyst. The experiment used a variation of salts, nitrates and chlorides. These catalysts were all 5 grams and were added to a 25 ml of hydrogen peroxide. The ration for this was 1:5. The first experiment that the group did was just recording the hydrogen peroxide by itself as this was used to get a base result. The group did this experiment four time with the decomposition taking 2 minutes to finish. This was the graphed into a line graph and the relax showed the consistent rate of reaction.ÂÂ   The main trend was that the nitrates did better than the other catalysts. The next catalyst added was the Iron nitrate(Fe(no3)). This catalyst produced the most interesting reaction as it created an exothermic reaction. The very moment the catalyst was added with the hydrogen peroxide it created profuse bubbling and the next second the it erupted into what looked like a boiling. the moment the hydrogen peroxide started bubbling the colour of the concoction changed from clear to a burnt orange. After the boiling, had stopped the concoction seemed to turn into a tinted yellow structure. This liquid was steaming and was clearly hot. This whole reaction was conducted three time and took 7.69 seconds on average. With this reaction, my hypothesis was proven to be supported. The second catalyst was Sodium chloride(NaCl) or basic salt this was by far the most uneventful reaction by far. The sodium chloride was added into the hydrogen peroxide and produced a few bubbles. This happen after the sodium chloride had dispersed. This reaction lasted for 22.77 seconds on average the reaction produced no colour or visible temperature change. The catalyst Potassium nitrate was also a very un-event full reaction. This did cause very rapid bubbling but it did not result in any noticeable change other than that. This catalyst like many others had no noticeable change. This was also tested times and had an average of 17.07. This was one of the shorter reactions. This aspect lead the group to believe that it was the second-best catalyst. This was also a reaction that stopped after it dissolved. The last and final catalyst was the Magnesium chloride was also an uneventful reaction. This was the longest reaction and therefore the worst catalyst of all the others. This catalyst sizzled for a long period bit it resulted in nothing happening. Evaluation The experiment was interesting as it was it had a range of mixed results. This was shown in this catalyst reaction as some experiments did barely anything and others had very violent notable reactions. There were four catalyst Iron nitrate, NaCl, Potassium nitrate, Magnesium Chloride. These Catalyst had varied effect on the decomposing reaction. For example, results showed that the nitrates did the best. But there was some problem met in this experiment. Due to the reactive nature of the Manganeses oxide. The group gelled together well and if was a good working relationship within the group. I feel as though the experiment could have been improved. As there may have been some key errors that could have occurred in the experiment. The experiment relayed on measurement for the entirety of it. The hydrogen peroxide had to be measured the catalysts had to be weighed and the time had to be counted by the stopwatch. These could have multiples of faults. Some main faults are in human error. Weather it man have been the wrong set up or parallax error these could all have been done. Another element that could have led to the experiments being wrong could have been inaccurate measuring tools. In some of the instrument the measuring lines could have been rubbed out or flawed. A way of fixing this would be if we used a more accurate item and used an IV Drip so that the use of the there would be a constant drip of fluid. After this I believe that it should be measured by a laser to bake sure that the amount of hydrogen peroxide is precise. The scales should have been swapped out with more accurate scales that pick up even the smallest changes of the object being weighed. When the experiment was, timed human error could have played the part of the timing as the person timing could have been just before or just after the catalyst was added. So, I propose that one would have a timer that was set to go off when the catalyst was added and would stop after the reaction would shop . This would get the most accurate reaction. I feel that is these modifications were done the experiment would have been much more accurate. In conclusion, the experiment of the decomposition of the Hydrogen peroxide reaction yielded interesting results. The hypothesis was supported as the nitrates did react better than the other catalysts.

Indian village Essay

In a small Indian village, a young child, Natu, wanders away into the jungle and was assumed to have been killed by the evil man-eating tiger Sheer Khan. In the other hand, a pack of wolves took care of the boy as one of their pups and named him Mowgli. Raksha, his wolf mother, kept a watchful eye out for him for she knew that Sheer Khan has a relentless thirst for the man-cub. During his years in the jungle, he befriended several animals which aided him as he grows old. Raksha is a she wolf who nursed the little Mowgl as an infant. Baloo, a kind-hearted laidback grey-hided bear, teaches Mowgli and his feral brothers the law of the jungle. The black panther Bagheera sets an eye out for Mowgli for he is constantly hunted by a evil man-eating tiger, Sheer Khan. Kaa is a huge powerful hundred year old serpent who helps Baloo and Bagheera rescue Mowgli when he was captured by group of monkeys in the hidden ruins. The boy grew into a young man and one day stumbles upon the village once again. His real mother recognized the boy as the child she lost long ago and welcomed him back home. She teaches Mowgli how to speak their language and how people behave in their village. Mowgli’s extraordinary ability to talk to the animals as fascinated the whole village including the young lady Mahala, Buldeo’s daughter. Buldeo is a boastful and arrogant hunter who despises Mowgli for contradicting him about real life and animals in the jungle. Mowgli wants to buy a â€Å"tooth† (knife) in order to kill the evil tiger Sheer Khan and buys one from Buldeo. Buldeo wanted to kill the tiger Sheer Khan for the reward of his hide. But Mowlgi killed the tiger first before Buldeo did. Buldeo forced Mowgli to surrender him the tiger skin but he refused for he vowed to lay it upon the wolfpack’s council rock. Even though Buldeo forbids Mahala to talk to Mowgli, she goes with him into the jungle. Mowgli shows her the ruins of an ancient city with a vast treasure horde. Inside the ruins, a python named Kaa warns them that the jewels are deadly. Mahala takes one coin with Mowgli’s permission. Buldeo finds out about the treasure and persuades Mowgli to show him the rest of the treasure. He accidentally drops the coin his daughter took from the trove which caught the eye of the barber and his customer, and now they want to find the treasure too. After finding out about his daughters discovery of the gold coin, Buldeo coerced Mowgli to lead him to the treasure trove. He accidentally let the barber and his customer to find out about the treasure too. Mowgli leads the men and set out to the jungle to look for the ruins. They find the ruins but greed took place and they all fought for the treasure. When the barber and the customer died, Buldeo set the jungle on fire. Mowgli saves his mother and goes back to live in the village. A quintessential characters in the story is Mowgli, the main character in the story, a child raised by wolves who eventually goes back to his village when he becomes a young man. Another is Baloo, sleepy old grey bear, teaches the wolf pups and Mowgli the laws of the jungle and how to live in the jungle. Same is Bagheera, the black panther is originally born in captivity in the palace of the Rajah of Oodeypore, India escapes his cage when he was mature and strong enough, saves the life of Mowgli by offering a freshly-killed bull to the pack of wolves and demands them to raise Mowgli. Stock characters in the story include Mahala, a gentle young lady who fell in love with Mowgli. Mogli showed Mahala the ruins where the treasure was hidden. Messua is the wife of the richest man in the village and she believes that Mowgli is her long lost son, Natoo, who was lost in the jungle some years before. When she and Mowgli are reunited, teaches him the virtues and language of their village. Raksha is the she-wolf who takes care of Mowgli and raised him as one of her own pups. Defying the tiger Sheer Khan who is determined to hunt and eat the man-cub Mowgli she says that her name is Raksha, which means Demon, because of her ferocity and fighting skills, and vows to fight to her death for any of her cubs, natural or adopted. The play wanted to portray the 1894 original story of author Rudyard Kipling’s The Jungle Book. The cast sought to represent the essence of each character in the story for the audience to feel the flow and tension of the play. The producers did an excellent job on capturing the spirit of the original story. Every key character was played well and with outstanding acting skills. The setting, background, and lighting makes the audience feel that they are one with the environment. The play and production was all meaningful for it captured and delivered what the audience would like to see, feel and hear. The cast skillfully played their roles and vividly showed emotion of the scene. As a child, I really enjoyed Disney’s animation of The Jungle Book. I enjoyed the play a lot. It made me feel like I was in the story with the characters. I liked how the play was delivered and how the cast depicted the characters. The lights and background gave a good addition to the environment. The sounds made the play alive. Sound effects give a really big impact to me in plays. I like how the production and script matched the original story, but with a little twist, which made it play even more fascinating. I look forward to watch more plays similar to this one for it brings back memories of my childhood. I know that the audience loved it too. Plays like this will be excellent to fuel the minds of kids and help enjoy life. Reference: (2006). The jungle book. Retrieved October 17, 2006, from Answers.com: world’s greatest encyclodictionalmanacapedia. Web site: http://www. answers. com/topic/the-jungle-book Internet Movie Database Inc. (2006). Full cast and crew for the jungle book (1942). Retrieved October 17, 2006, from IMBD: Earth’s Biggest Movie Database Web site: http://www. imdb. com/title/tt0034928/fullcredits Scheib, R. (2003). Jungle book. Retrieved October 17, 2006. Web site: http://www. moria. co. nz/fantasy/junglebook42. htm _____. (2006). The jungle book. Retrieved October 17, 2006, from Wikipedia: The Free Encyclopedia. Web site: http://en. wikipedia. org/wiki/Jungle_Book

What Social Commentary Essay Topics Is - and What it Is Not

What Social Commentary Essay Topics Is - and What it Is Not What makes a leader is the ability to work out a means of putting it right. Ultimately, the usual idea remains that individuals might not have the drive to fix society until it's been utterly demolished and they don't have any other choice. The key point to remember here is you do not comment your memories you retell them. When conveying your ideas, concentrate on the principal thing which you want to convey. Other individuals consider abstract critique. When you understand that you are both completely free and totally responsible, your parents become humans rather than the tyrants you imagined them to be. Social commentary has a potent effects in the present society. To begin with, describe the overall attitude to the topic and offer confirmation of this. A student ought to keep in contact with the hottest trends and know which persuasive essay topics are related to sound convincing in regards to defending pers onal opinions. To start with, your essay is supposed to deal with a particular social, psychological or anthropological matter. Without regard to the quantity or kind of research involved, argumentative essays must set a very clear thesis and follow sound reasoning. Writing a superb persuasive essay is not an easy job, however, it's achievable. While summary is still vital for giving your reader context, commentary is vital to writing an excellent essay. It might not appear easy to compose a commentary essay when you get the task for the very first time. Commentary essays may concentrate on just a single text or act as a way to compare and contrast many texts. A commentary essay is a type of common essay, therefore it needs to have a very clear structure. Now based on what you've read and highlighted, you can begin making an essay outline. The intent of publishing a commentary is to give a forum where different perspectives can be discussed on a specific topic in a journal. Social media as a new kind of child-bullying. When you note down the ideas, make certain that you highlight the essential key phrases. Some vital keywords might be repeated in the write-up, so they will be quite helpful in writing in your commentary. To know how to do a commentary essay, you have to first learn to formulate your thoughts correctly. The commentary essay definition isn't as complicated as it appears. These types of essays are just like others but it's still true that you have to follow along with the instructions that you're assigned. Commentary essays are among several kinds of essays utilised in writing. The Social Commentary Essay Topics Game Your parents aren't a totalitarian government. To know what's a commentary essay is the crucial skill not just for students, teachers, editors but life generally. Don't forget to ask the recommendations of your teacher! Whenever you opt to ask us for skilled guidance, don't hesitate to get in touch with our support managers. A seasoned professional will make an error-free assignment very quickly and can help you boost your grades. In case you still have problems in doing this, don't hesitate to ask our highly versed authors and editors for aid. You're going to be presenting your exclusive viewpoints on several different facets and problems. Among the sources ought to be from somebody who is academic or who's in a field about the object of your commentary. Actually, writing that summary took me beneath a moment, with very little thought. To cite 1-2 sources to strengthen your argument would suffice normally. Religion news supply, both your. Make certain that the commentary follows the outline you've prepared in the start. When it has to do with literary commentary, you wish to make sure you read the passage over and over again. Author commentary stipulates a computer! A literary commentar y is especially focused on a comprehensive analysis and thorough description of a particular text.

Short Story - 2260 Words

Once inside there were all sorts of military people roaming around the place. One of them brought two cups of tea to them as they sat down at a table. Lincoln instinctively took a sip. How did they know he liked his tea black and hot and that he detested coffee? Michelle must have told them. â€Å"Well Sugar, what happened?† Michelle did not muck around when it came to getting information. â€Å"Before I say anything, could you do me a favour?† Lincoln was ever cautious. â€Å"Sure. What is it?† â€Å"You see that jug over there. I want you to break it over my head.† Lincoln explained. He could see the horrid look on Michelle’s face. â€Å"I know this sounds absurd but trust me, I’m begging you. Please do it and I’ll explain everything afterwards.† Slowly Michelle†¦show more content†¦In particular about his brain injury, his falling in and out of reality and how the warehouse was a centre for humanitarian aid not weapons. For an hour, Michelle sat dumbfounded. She listened intently, even getting one of the other people to turn on a recording device so they got it all down. When Lincoln finally finished, Michelle had a more relaxed look on her face. She now had some explanation as to why she had to clobber him with the jug. Lincoln finished in an almost apologetic tone. â€Å"Look Turtle. I don’t even know if I am currently in reality or having yet another illusion? If I’m in an illusion, it’s the best one yet. I get to see you again as I remember you. You weren’t too cooperative back at the warehouse. I know you kept me safe there. That’s why I returned there those times. Were you working undercover?† Michelle looked totally surprised. â€Å"Ah, Sugar, I’ve never set foot in that warehouse. Whoever you were trying to crack onto, it wasn’t me! I’ve been in Afghanistan for the last five years on assignment. I was called in after the first rescue attempt failed.† Lincoln remembered the first raid on the warehouse. 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