Kid-Friendly Elephant Toothpaste Demo

The elephant toothpaste demo is one of the most popular chemistry demonstrations, in which a steaming tube of foam keeps erupting from its container, resembling a smooshed tube of elephant-sized toothpaste. The classic demo uses 30% hydrogen peroxide, which is not safe for kids, but there is a safe version of this demonstration that is still very cool. Materials Empty 20-ounce plastic bottle (or other container)3% hydrogen peroxide solution (available at nearly any store)Packet of active yeast (from the grocery store)Liquid dishwashing detergent (such as Dawnâ„ ¢)Warm waterFood coloring (optional, but it looks nice) Make Elephant Toothpaste Pour 1/2 cup hydrogen peroxide solution, 1/4 cup dishwashing soap, and a few drops of food coloring into the bottle. Swish the bottle around to mix the ingredients. Set the bottle in a sink or outdoors or some other place where you wont mind getting wet foam everywhere.In a separate container, mix a packet of active yeast with a little warm water. Give the yeast about 5 minutes to activate before proceeding to the next step.When you are ready to do the demo, pour the yeast mixture into the bottle. The reaction occurs immediately upon the addition of the yeast. How It Works Hydrogen peroxide (H2O2) is a reactive molecule that readily decomposes into water (H2O) and oxygen: 2H2O2 → 2H2O O2(g) In this demonstration, yeast catalyzes the decomposition so it proceeds much more rapidly than normal. Yeast need warm water to reproduce, so the reaction wont work as well if you use cold water (no reaction) or very hot water (which kills the yeast.) The dishwashing detergent captures the oxygen that is released, making foam. Food coloring can color the film of the bubbles so you get colored foam. In addition to being a nice example of a decomposition reaction and a catalyzed reaction, the elephant toothpaste demo is exothermic, so heat is produced. However, the reaction just makes the solution warmer, not hot enough to cause burns. Christmas Tree Elephant Toothpaste You can easily use the elephant toothpaste reaction as a holiday chemistry demonstration. Just add green food coloring to the peroxide and detergent mixture and pour the two solutions into a Christmas tree-shaped container. A good choice is an Erlenmeyer flask because it has a cone shape. If you dont have access to chemistry glassware, you can make a tree shape by inverting a funnel over a glass or making your own funnel using paper and tape (which you could decorate, if you like.) Comparing the Original Reaction With the Kid-Friendly Recipe The original elephant toothpaste reaction, which uses a much higher concentration of hydrogen peroxide, can cause both chemical burns and thermal burns. While it produces a larger amount of foam, its not safe for kids and should be performed only by an adult using proper safety gear. From a chemistry perspective, both reactions are similar, except the kid-safe version is catalyzed by yeast, while the original demonstration is usually catalyzed using potassium iodide (KI). The kids version uses chemicals that are safe for children to touch. The lower concentration of peroxide can still discolor fabrics. Care should be taken to avoid ingestion because the project includes detergent, which can cause vomiting. Key Takeaways The elephants toothpaste chemistry demonstration produces heated foam when chemicals are mixed.The original demonstration results from decomposition of hydrogen peroxide catalyzed by potassium iodide. Detergent solution captures gases to form the foam. The kid-friendly version uses a lower concentration of hydrogen peroxide, with the decomposition catalyzed by yeast.While both versions of the reaction may be performed for a young audience, the original version uses concentrated hydrogen peroxide, which is a strong oxidizer, and potassium iodide, which may not be readily available.The kid-friendly version uses chemicals that are safe for children to touch, in case of a splash.As with all chemistry demonstrations, adult supervision is recommended. Sources Dirren, Glen; Gilbert, George; Juergens, Frederick; Page, Philip; Ramette, Richard; Schreiner, Rodney; Scott, Earle; Testen, May; Williams, Lloyd. Chemical Demonstrations: A Handbook for Teachers of Chemistry. Vol. 1. University of Wisconsin Press, 1983, Madison, Wis.Elephants Toothpaste. University of Utah Chemistry Demonstrations. University of Utah.

60 Writing Topics for Extended Definitions

Simply put, a definition is a statement of the meaning of a word or phrase. An extended definition goes beyond what can be found in a dictionary,  offering an expanded analysis and illustration  of a concept that might be abstract, controversial, unfamiliar, or frequently misunderstood. Take, for example, writings such as William James Pragmatic Theory of Truth or John Bergers The Meaning of Home. Approaching the Abstract Abstract concepts, including many of the broad terms in the list that follows, need to be brought to earth with an example to relate what they mean to your reader and to get your point or opinion across. You could illustrate the concepts with anecdotes from your personal life or examples from the news or current events, or write an opinion piece.  Theres no single method for  developing  and  organizing  a paragraph or essay by extended definition. The 60 concepts listed here can be defined in various ways and from different points of view. Brainstorming and Prewriting Start with brainstorming your topic. If you work well with lists, write the word at the top of the paper and fill the rest of the page with all the things that the word makes you think of, feel, see, or even smell, without stopping. Its OK to go off on tangents, as you might find a surprising connection that could make a powerful, insightful, or even humorous essay. Alternatively, brainstorm by writing the word in the middle of your paper and connect other related words to it and each other. As you develop your angle, think about the concepts background, features, characteristics, and parts. What is the concepts opposite? What are its effects on you or others? Something in your list or word map will spark a writing idea or theme to use to illustrate the abstract concept, and then its off to the races. If you run into a dead end the first time, go back to your list and pick another idea. Its possible that your first draft turns out to be prewriting and leads to a better idea that can be developed further and can possibly even incorporate the prewriting exercise. Time spent writing is time spent exploring and is never wasted, as sometimes it takes a bit of pursuit to discover the perfect idea. If seeing examples will help spark your essay, take a look at Gifts, by Ralph Waldo Emerson, Gore Vidals Definition of Prettiness, or A Definition of Pantomime, by Julian Barnes. 60 Topic Suggestions Looking for a place to start? Here are 60 words and phrases so broad that writings on them could be infinite: TrustKindnessSexismGumptionRacismSportsmanshipHonorModestySelf-assuranceHumilityDedicationSensitivityPeace of mindRespectAmbitionRight to privacyGenerosityLazinessCharismaCommon senseTeam playerMaturityIntegrityHealthy appetiteFrustrationOptimismSense of humorLiberalConservativeA good (or bad) teacher or professorPhysical fitnessFeminismA happy marriageTrue friendshipCourageCitizenshipSuccessA good (or bad) coachIntelligencePersonalityA good (or bad) roommatePolitical correctnessPeer pressureLeadershipPersistenceResponsibilityHuman rightsSophisticationSelf-respectHeroismThriftSlothVanityPrideBeautyGreedVirtueProgressA good (or bad) bossA good (or bad) parent

Analysis Of The Poem Suicides Note - 776 Words

The poem â€Å"Suicide’s Note† by Langston Hughes is a deep and emotional poem that is shown as the result of the imagery and literary devices present in the poem. Imagery is a strong element that helps portray a lot of internal feelings for the audience to fathom with, thus creating an experience that the audience can enjoy. Imagery is the language represented by sense experience and a literary device that helps create a mental picture for the reader to understand what the writer is trying to say to the audience (Johnson, Arp 779). The following is the poem by Langston Hughes: â€Å"The calm,/Cool face of the river/Asked me for a kiss.† (Hughes 1-3) When examining the poem, â€Å"Suicide’s Note†, it is full of imagery with only three lines present. The†¦show more content†¦The tone is the speaker’s attitude toward a certain subject (Johnson, Arp 887). When describing the tone of this poem many would say is it depressing or tragic. However, once encountering this poem and being through the very experience that the speaker is going through others would describe this poem as calm, relaxed, and tender. This poe m is calm and relaxed because the speaker is ready for death to take over his body. The speaker is more relaxed than ever due to the very potent response that the speaker is ready to kiss the river. If this character in this poem was not contemplating suicide, then he would of never even wrote this poem. This speaker is ready to give up life as he/she dies. This poem is tender being the author implements a feeling of control for the reader, which makes you feel like if you do or say one wrong thing then the speaker’s life would come to an end. The author puts the life of the speaker into the audience’s hands to decide what they will do with it, thus why leaving the poem as an opened ended poem. The speaker portrays a tone of tenderness, but also helps portray mood throughout this also. Though given tone, the author also implements mood into the poem. Mood is the emotional feeling created in the reader throughout the poem. One of the many ways that mood is created is through the tone of the author. Creating mood through tone is when â€Å"The attitude of the writer, speaker, or narrator evokes feelings and emotions

Scenes from an Execution Essay Example For Students

Scenes from an Execution Essay In English playwright Howard Barkers black comedy Scenes from an Execution, Galactica, a 16th-century woman painter, is commissioned by the Venetian republic to commemorate a bloody battle until her honest portrayal of the event has her condemned as an enemy of the state and imprisoned. Director Robert Allan Ackerman, who directs the plays U.S.-premier production, running through May 9 at Los Angeless Mark Taper Forum, was drawn to the script because he found the politics in the play all too similar to those just across town in Hollywood. He was happy to discover that acclaimed British actor Juliet Stevenson (whom he directed in London in Lanford Wilsons Burn This, and who makes her American stage debut as Barkers foursquare heroine) detected the same parallel which is one reason she suggested the play to the Taper in the first place. Ackerman, who recently directed the PBS film Mrs. Cage, says Barkers play calls to mind the movie industrys proclivity for judging artistic merit on the basis of a single work, noting that heads can roll if a film doesnt do what its supposed to. Scenes from an Execution designers Richard Macdonald (scenic concept) and Yael Pardess (sets) juxtapose contemporary Hollywood clothing with Venetian architecture, using stone and lattice to evoke the labyrinthine quality of the ancient citys streets. For Ackerman, the thematic correspondences reflect the timeless struggle between the desire for fame and the need to maintain artistic integrity. I think those tensions can be found in almost any serious artist, he reasons. Thats why the play is accessible.

Szabist Essay Example

Szabist Essay Service offering And Variety Augmenting the Core Product: The shostack’s molecular model can help identify the tangible and intangible elements involved in service industry. For Szabist the intangible element includes the knowledge they provide to a student in different fields for example BBA, media sciences etc. The grooming of personality, to work in teams, the education which is the core product of Szabist. The tangible element includes the degree provided by Szabist. Nature of Service Offering: Core Product: The core product Szabist provide is quality education. Supplementary Service: The supplementary service Szabist includes extra-curricular activities such as computer labs, libraries, sports room, the societies and affiliation to foreign universities. Delivery Process: Szabist delivery process is through the faculty they hire for providing quality education. The documentation of all the records of student all over the time period till they are studying. The Flower of Service: Information Clearance Classes Degree Education Consultation Fees Submission The flower’s petals are the supplementary service shown in the clockwise pattern in which they are often encountered by customers. Information: When a student comes in for admission they are provided with the admission form and guided about the procedure through which they can join Szabist. Consultation: The student can consult in which program they fit the most and what are the requirement criteria for that particular program. Fees Submission: Once the student went through the admission process they are asked to submit their fees beforehand. We will write a custom essay sample on Szabist specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Szabist specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Szabist specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Classes: The classes are conducted on daily basis for whatever program a student is rolled in. Clearance: Once the student completes his/her credit hours criteria all payments are settled between the student and Szabist before the degree is granted. Degree: Degree is awarded by Szabist to the successful candidate who completes his/her course requirement. The Service Product mix: Width: Graduate Programs EMBA, MBA, MS (Computing), MS (Media Sciences), MS (Management Sciences), MS (Social Sciences Economics) and Ph. D. Undergrad Programs BBA, BABS, BS (Computing), BS (Media Sciences), BS (Social Sciences), BE Mechatronics, Biosciences and LLB. Length: The total number of courses offered by Szabist. Depth: EMBA SZABIST offers a two years EMBA degree for the executives and the middle/level managers who strive for excellence and greater challenges in their professional life. The EMBA is a two years program spread over six semesters and consists of 66 credit hours. 20 courses, 1 Business Project (3 credits) and 1 Research Project (3 credits) are required to graduate. Maximum time limit to complete the EMBA degree is five years. MBA SZABIST offers MBA degree in the specialized fields of Management, Human Resource Management (HRM), Marketing, Finance, Supply Chain Management, Islamic Banking, MIS and Economic Policy Management. Both MBA (Day) and MBA (Evening) programs are offered. For students with a 4-year BBA degree, the duration of the MBA Program is 1. 5 years. 10 MBA courses (30 credits) and a research project (6 credits) are needed to graduate. Students are also required to complete a 6-week internship. The maximum duration to complete this degree is 5 years. For students with a 4-year non BBA degree / relevant degree, the duration of the MBA program is 2 to 2. 5 years. 24 courses (72 credits) are needed to graduate. Students are also required to complete a 6-week internship and clear the SZABIST comprehensive exam. The maximum duration to complete this degree is 5 years. For students with a 2 to 3 year undergraduate degree the duration of the MBA program is 3 to 3. 5 years. 30 courses (90 credits) are needed to graduate. Students are also required to complete a 6-week internship and clear the SZABIST comprehensive exam. The maximum duration to complete this degree is 5 years. MS (Computing) SZABIST offers MS degree with majors in Information Technology, Software Engineering and Computer Sciences. The MS is an evening program only and consists of 8 courses and a Thesis / Research Project / Course Work. For students with a 4 year BS or 2 year MCS degree, the MS is a two year program. 9 MS courses and Thesis/ Research Project/Course Work are needed to graduate (33 credit hours). For students with a 4 year professional degree (BE, MSc etc. ), the MS Program is a two year program. Deficiency conversion courses and 9 MS courses and Thesis/Research Project/Course Work are needed to graduate (33 credit hours +18 credit hours of deficiency courses. ) For students with a 3 year BCS degree, the MS Program is a three year program. One year of deficiency conversion courses and 9 MS courses and Thesis or Research Project are needed to graduate (33 credit hours + 30 credit hours of deficiency courses. ) The maximum time limit to complete the MS degree is five years. MS (Media Sciences) SZABIST offers the MS Media Sciences degree. The MS Media Sciences is an evening program only and consists of 8 courses and a Thesis. For students with a 4-year BS Media Sciences or relevant Bachelors or Masters degree, the MS Program is 1. 5 years. 8 MS courses (24 credits) and a thesis (6 credits) are needed to graduate. Students are also required to complete a 6-week internship. The maximum duration to complete this degree is 5 years. For students with a 4-year non-relevant Bachelors or Master degree, the duration of the MS program is 2 to 2. 5 years. 24 courses (72 credits) are needed to graduate. Students are also required to complete a 6-week internship and clear the SZABIST comprehensive exam. The maximum duration to complete this degree is 5 years. For students with a 2 to 3 year undergraduate degree, the duration of the MS program is 3 to 3. 5 years. 30 courses (90 credits) are needed to graduate. Students are also required to complete a 6-weeks internship and clear the SZABIST comprehensive exam. The maximum duration to complete this degree is 5 years MS (Management Sciences) SZABIST offers the fifth year MS degree in the specialized fields of Management, Human Resource Management (HRM), Marketing, Finance and IT (MIS/ E-Business). The MS program is an evening program only and consists of 8/10 courses and/or Thesis (30 credits). The maximum time limit to complete the MS degree is five years. MS (Social Sciences Economics) SZABIST offers the fifth year MS degree in Social Sciences Economics with majors in Psychology, Sociology, International Relation, Political Science, Economics, Media Studies, Education, Public Administration, NGO Management, Gender Studies, Philosophy, Law Human Rights and Public Policy. The MS Program is an evening program only and consists of 8/10 courses and/or a Thesis/ Independent Studies (30 credit hours). Ph. D. SZABIST offers the Ph. D. degree in Management Sciences, Computing and Social Sciences Economics that can be completed during the evenings in two years after the MS / MBA degree. 6 Ph. D. courses and a dissertation are required to graduate. A total of 48 credit hours must be completed. For candidates with a 4 year professional (BBA / BS / BE / MBA / MCS / MSc / MA) degree, the Ph. D. Program is a three year 78 credit hours program. MS degree (30 credits) must first be successfully completed. In Management Sciences, specializations include Organizational Structure, Human Resource Management Development, and International Business Strategy Development, e-Business Strategy, Leadership, Corporate Restructuring, Corporate Ethics Governance, Advanced Financial Management, Marketing Communication and Not-for-Profit Management. In Computing, specializations include Database Management Systems, Data Warehousing Mining, Networking Communication, Business Intelligence, Process Modeling, Telecommunication, Mobile Communication, Mobile Computing, Technology Management, Artificial Intelligence, Software Engineering, Agent Systems, Speech Recognition, Multimedia HCI Systems and e-Business, Mechatronics and Machine Vision Image Processing. In Social Sciences Economics, specializations include Economics, International Relations, Political Science, Media Studies, Education, Public Administration, NGO Management, Gender Studies, Philosophy, Psychology, Sociology, Law Human Rights and Public Policy. The total time to earn a Ph. D. degree after a four-year university degree is a minimum of three years to a maximum of seven years. BBA SZABIST offers a four year (eight semesters) BBA degree program with majors in Management, Marketing, Finance, and IT. The BBA Program is essentially a day program and consists of 46 courses and a thesis (six courses per semester) with a total of 144 credit hours (all electives and certain courses may be offered in the evening) and an Internship. The maximum time limit to complete the BBA degree is seven years. BABS SZABIST offers the 3 years BA (Hons) Business Studies of the University of Wales, Newport, UK. Students can earn BABS, UK, and Degree after completing two years of study at SZABIST and one year at Newport, UK, through an articulation agreement. Students aiming for a UK degree can join this programme and save 2 years UK cost. Two years study at SZABIST is fully mapped and matched with University of Wales BA (Hons) Business Studies curriculum. Please refer to separate SZABIST brochure for details of this program. BS (Computing) SZABIST offers a four year (eight semesters) BS (Computing) degree with majors in Information Technology, Telecommunications, Software Engineering and Computer Sciences. The BS Program is essentially a day program and consists of 40 courses (six courses per semester) with a total of 130 credit hours (all electives and certain courses may be offered in the evening), Internship and the passing of the comprehensive exam. The maximum time limit to complete the BS degree is seven years. BS (Media Sciences) SZABIST offers a four year (eight semesters) BS (Media Sciences) degree with majors in Production and Advertising. The BS Program is essentially a day program and consists of 46 courses a thesis (six courses per semester) with a total of 144 credit hours (all electives and certain courses may be offered in the evening), and an Internship. The maximum time limit to complete the BS degree is seven years. BS (Social Sciences) SZABIST offers a four your (eight semesters) BS (Social Sciences) degree with majors in Psychology, Sociology, Economics, Political Sciences and International Relations. BS Program is essentially a day program and consists of 48 courses (six courses per semester) with a total of 144 credit hours, Internship and the passing of the Comprehensive Exam. The maximum time limit to complete the BS degree is seven years. BE Mechatronics SZABIST offers a four year (eight semesters) BE (Mechatronics Engineering). The BE program is essentially a day program and consists of 43 courses (five or six courses per semester) with a total of 142 credit hours (all electives and certain courses may be offered in the evening), Internship and the passing of the comprehensive exam . The maximum time limit to complete the BE degree is seven years. Biosciences BS Biosciences at SZABIST is a four year program spread over 8 semesters and consists of 135 credit hours of teaching, 44 courses, internship of at least six weeks, and research project are needed to graduat LLB SZABIST offers the LLB University of London International Programmes This is an evening program and can be completed in three years. The University of London, UK will award the LLB degree. Please refer to the separate SZABIST brochure and to the University of London web site. www. londoninternational. ac. uk for details of this program. Reference: http://khi. szabist. edu. pk/programs

Free Essays on Parson Adams

Although the title of the novel by Henry Fielding is, â€Å"Joseph Andrews†, it is Abraham Adams who captures the main interest of the reader. Parson Adams, who is a friend of Joseph Andrews, is an idealistic clergyman as well as the comic hero of the novel. The following is a brief character evaluation of Parson Adams. Parson Adams appearance does not depict the typical well-dressed and neat parson that we expect to come across. In fact he is quite contrary to the anticipated ideals. He is a middle-aged man of about fifty years old. Adams is a strong, healthy, and energetic man. His physical appearance is quite interesting as he has a, â€Å"comical† face. He has deeply wrinkled cheeks and a bearded chin. Parson Adams legs are considerably so long that they almost touch the ground when he rides on horseback. His fists are, â€Å"rather less then the knuckle of an ox†, with wrists, â€Å" which Hercules would not have been ashamed of.† Abraham Adams wears a periwig, which he turns inside out at night and binds it with a red spotted, handkerchief to his scalp. His attire matches his comical features for he usually wears a dilapidated old cassock, which is imperfectly hidden by a greatcoat that hardly reaches halfway down his thighs. He adorns his head with an old, tattered hat, which goes quite well with the rest of his out-fit. Adams accessories include an old pipe, and a heavy as well as a stout, crabstick. For a middle-aged man of fifty years, Parson Adams has immense, physical strength. He is magnificently strong and healthy. We can see an example of this in the incident where he plunges into the midst of danger and rescues Fanny by knocking her attacker down with his huge fists. He also fights like a mad man when the squire’s men at The New Inn attack him. He is capable of a good brawl when the situation and circumstances arise. It is important to mention here that he never indulges in a fight unless it is in self-defens... Free Essays on Parson Adams Free Essays on Parson Adams Although the title of the novel by Henry Fielding is, â€Å"Joseph Andrews†, it is Abraham Adams who captures the main interest of the reader. Parson Adams, who is a friend of Joseph Andrews, is an idealistic clergyman as well as the comic hero of the novel. The following is a brief character evaluation of Parson Adams. Parson Adams appearance does not depict the typical well-dressed and neat parson that we expect to come across. In fact he is quite contrary to the anticipated ideals. He is a middle-aged man of about fifty years old. Adams is a strong, healthy, and energetic man. His physical appearance is quite interesting as he has a, â€Å"comical† face. He has deeply wrinkled cheeks and a bearded chin. Parson Adams legs are considerably so long that they almost touch the ground when he rides on horseback. His fists are, â€Å"rather less then the knuckle of an ox†, with wrists, â€Å" which Hercules would not have been ashamed of.† Abraham Adams wears a periwig, which he turns inside out at night and binds it with a red spotted, handkerchief to his scalp. His attire matches his comical features for he usually wears a dilapidated old cassock, which is imperfectly hidden by a greatcoat that hardly reaches halfway down his thighs. He adorns his head with an old, tattered hat, which goes quite well with the rest of his out-fit. Adams accessories include an old pipe, and a heavy as well as a stout, crabstick. For a middle-aged man of fifty years, Parson Adams has immense, physical strength. He is magnificently strong and healthy. We can see an example of this in the incident where he plunges into the midst of danger and rescues Fanny by knocking her attacker down with his huge fists. He also fights like a mad man when the squire’s men at The New Inn attack him. He is capable of a good brawl when the situation and circumstances arise. It is important to mention here that he never indulges in a fight unless it is in self-defens...

The Tension between Centripetal and Centrifugal Forces in Australia Essay

The Tension between Centripetal and Centrifugal Forces in Australia - Essay Example The Australian Commonwealth of States was set up in response to the need among the people to withstand and oppose the forces of colonialism, as symbolized by the rule of Britain. The authors of the Commonwealth of Australia Constitution were Chief Justice Griffith and Justices Barton and OConnor, who had intended that the Constitution of Australia should exist on its own merit and not merely as a British statute. The Australian Commonwealth Act of 1900 has accorded Federal powers to the Commonwealth such that Constitutional control of the Privy Council is retained, while central powers are reduced to their narrowest limits and in this manner, has made it possible for the States to unite under one common umbrella of central defense to proclaim national independence in the future. The Federation of six Australian States was formulated with the knowledge that the Commonwealth and the States were in and of themselves, sovereign states with their own spheres of authority. In formulating the Australian federation, the founders were not anxious to toe the Canadian line which was deemed too centralist and were more inclined to favor the loose administrative style of the American Federation that was more decentralized3. Through this, the Commonwealth was conferred with the powers to maintain the peace and to make laws for peace, order and for the good of the Commonwealth in all the areas that had been designated under Section 51 of the Constitution, whereby the States were permitted to retain all their powers, with the exception of those powers that were wrested away, for the common good of the Commonwealth. Such areas included defense and foreign affairs. Areas not specifically identified under the â€Å"central† jurisdiction are  designated as â€Å"resid ual powers† which in the case of a Federation like Australia are considered to be within the purview of the States, since Australia has a decentralized federal system, unlike Canada that has a centralized federal system of Government.