Free essays on chemistry are educational resources that allow individuals to learn more about the science of chemistry at no cost. These essays cover a wide range of topics, from basic concepts in chemistry to more complex scientific theories and experiments. They provide insights into the chemical properties of various elements and compounds, the history of chemistry and its contributions to society, and the latest developments in this field. By reading these essays, students can deepen their understanding of chemistry and gain valuable knowledge that can help them in their academic and professional pursuits.
Essay Examples on Museum Paper
1st Essay Sample on Museum Paper The piece I have chosen is an oil painting by Chuck Close entitled Robert, made in 1997. I observed it at the San Francisco Museum of Modern Art (SFMOMA). The painting, which measures an enormous 102 by 84 inches, is a straightforward portrait of one of Close's friends and fellow (pop) artists Robert Rauschenberg, although its dazzling style and ingenious execution are anything but straightforward. The subject matter is typical of Chuck Close: a…...
ColorCulturePaintingVisual Arts
Experiment with potato and salt water
When the solution is hypersonic, the potato Will decrease in size making the potato hypotonic. Osmosis is really interesting, that is why chose to write this report about it. Materials and Methods We first cut out six cores out of a potato. We trimmed them all to the same length using a razor. After we had cut them to the same size we weighed them using a scale. The weight ranged from . Egg to . Egg. As the potatoes…...
NatureOsmosisWater
The scientific method
Laboratory Objectives After completing this lab topic, you should be able to: 1. Identify and characterize questions that can be answered through selecting investigation. 2. Define hypothesis and explain what characterizes a good selecting hypothesis. 3. Identify and describe the components of a scientific experiment. 4. Summarize and present results in tables and graphs. 5. Discuss results and critique experiments. 6. Design a scientific experiment. 7. Interpret and communicate results.Introduction Biology is the study of the phenomena of life, and…...
DataExperimentHypothesisResearchScientific Method
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Utilitarianism is a contrast to classic approaches to ethics
Utilitarianism is a contrast to classic approaches to ethics. One of the main features or indeed the basis of Utilitarianism is the 'Greatest happiness for the greatest number' theory which posses a secular oUtlook to ethics. Utilitarianism is the doctrine according to which actions are made right or wrong so far as they promote happiness, wrong in so far as they promote the reverse. The form of this definition conceals the fact that Utilitarianism is often called the consequentalist doctrine.…...
ContrastEthicsLifePhilosophyScienceUtilitarianism
An Experiment to Find out how the Length of Wire Effects Resistance
In this experiment we are trying to find out if by changing the length of a piece of wire its affects the resistance of current. I will find this out by having a piece of wood with a piece of wire stretching along the wood. I will have a power box on connected to an ammeter and voltage meter and then these connected to the piece of wire using crocodile clips. The variable I'm going to change will be the…...
ElectricityExperimentPhysics
Poetic love comparisons
The Elizabethan era was a time one links with the reign of Queen Elizabeth. It was a time known as the 'Golden Age', and allowed for a great expanse in English literature, poetry and music. It was the epitome of the English renaissance, and with it came many great artists, including William Shakespeare who changed Elizabethan theatre more than anyone of that era.Like Shakespeare, many English writers were influenced by the Italian sonnet, and these became heavily incorporated into the…...
ContrastLifeLiteratureLovePoems
Comparing vulnerability in ‘Cousin Kate’ and ‘The Seduction’
The two poems were written around one hundred years apart so therefore I think society would have changed in the poems. As these poems are about seduction I think the women will be the ones who are vulnerable and that the men will have power over the women. This would possibly be more the case in the older poem as women did not have such a strong position in society. Seduction means to persuade by some means someone to do…...
ContrastMetaphorPoetry
Compare and contrast four sonnets
'No mockeries now for them, no prayers nor bells;' Owen shows himself to be cynical of the Christian religion, as he can not see how a loving God could have anything to do with so many deaths. In fact, Owen served three years as a parish assistant. Wilfred Owen died aged 25 on 4th November 1918, a week before the end of the Great War. He was completely unheard of at the time of his death, and only five of…...
ContrastLovePoetryRhymeWilliam Shakespeare
The Percentage Purity of an Unknown Acid
A solid monobasic acid with a relative molecular mass of 163g was bought from a leading supplier. On the label the percentage purity by mass of the acid was said to be 99.1?. A student was then asked to check this value by titration against sodium hydroxide.*The student began by placing an empty bottle on a balance reading to one decimal place, zeroed the balance then added the acid to the bottle. When a suitable amount had been added, the…...
ChemistryTitration
A-Level Physics Investigation: The Ski Jumper
To find out how the starting position of a ski jumper affects the horizontal distance travelled in the jump. We will model the jumper and the ski slope as a ball bearing and a curtain rail. We will not take air resistance, friction and other various type of energy lost into account. However in practical we have to keep in mind that they do exist and causes variation in our results.Factors which affects the range:Changing the vertical height of drop…...
EnergyExperimentFrictionGravityPhysicsTime
Things That Affect Marble Acceleration
The following sample essay is about things that affect marble acceleration. Read the introduction, body and conclusion of the essay, scroll down. There are a number of things that affect the acceleration of the marble:- Angle/Gradient of slope. Changing the angle of the slope would affect the acceleration of the squash ball as it changes the energy the marble starts with as steeper angles raise the slope start higher so the marble would have more potential energy.- Mass of marble.…...
EnergyExperimentFrictionGravityMechanical EngineeringPhysics
Investigation Into How mass Affects the Rate of Fall of Cup Cakes
In this investigation we will observe and analyse the rate of fall of cup cakes when the mass is altered.In my preliminary work we conducted experiments where we dropped a large surface area parachute and small surface area parachute from the same height of 1 metre and 1.5 metres. The purpose of this preliminary experiment is to familiarise and understand the principles involved in the experiment.Diagram:Results of preliminary experiment:Parachute dropped at 1 metre -Time in seconds to fall 1 metreSmall…...
ExperimentForceGravityMechanical EngineeringPhysics
Transportation and issue of Oil Consumption in US
Oil and petroleum products have been mainstay of world’s economic and technological advancement since past 150 years. The mechanism driving the entire transportation system from automobiles, airplanes, railways, ships to space rockets is based on utilization of energy of petroleum oil. Petroleum products are also extensively used in a number of infrastructure industries that form the core of industrial processes and basis of existence of modern world.However, the petroleum resources of world are very limited and they cannot endlessly meet…...
Electric VehicleEnergyEnergy SourcesHydrogenIndustryPublic Transport
Stress
Stress is the loading applied on the material while strain is the deformation that results due to application of load or stress. By this definition, it is obvious that stress and strain are related and that relationship can best be explained by considering a stress-strain curve (Figure 1). Building materials have their own corresponding stress-strain curve which can be obtained by recording the amount of deformation (strain) upon application of tensile or compressive loading. Curve results reveal the behavior or…...
ChemistryCivil EngineeringConstructionMaterialsMechanical EngineeringMental Health
Linde Bangladesh
Linde Bangladesh Limited (formerly BOC Bangladesh Limited) a multinational organization that has been present in the country for nearly 60 years with continuous expansion in operations and business, providing global solutions with a local outlook. With a modest appearance at the beginning, all the products of Linde Bangladesh Limited are now part and parcel of all the industrial and economic activities of the country. The selected topic of this internship report is “A Comprehensive Study on the Distribution Channel of…...
Carbon DioxideChemistry
Compare and Contrast Buddhism and Hinduism
The Beliefs and Relations of Hinduism & Buddhism Mr. Valor Pickett Robert Truett 5/1/13 The Beliefs and Relations of Hinduism and Buddhism The two major religions that have dominated the country of India are known as Hinduism and Buddhism. Unlike the majority of religions known to man, these two religions are more followed as a way to live rather to gain enlightenment than a dualistic battle between deities trying to claim the souls of the world before the apocalypse as…...
BuddhismContrastHinduismLifeReligion
What Is Photosynthesis?
The following sample essay on "What is photosynthesis?" tells that Photosynthesis and cellular respiration play a significant role in the existence of all living organisms on the planet. Supplying energy to the cells they carry out is the main process, which we call life. All living organisms need the energy for the existence on our planet. Photosynthesis and cellular respiration are fundamental reactions that support normal course of all life processes in the organism. Though the passing of photosynthesis and…...
BiologyChemistryEnergyGlucoseMetabolismPhotosynthesis
The On Amazing Rubidium
The following sample essay on The On Amazing Rubidium. To start off this amazing element has just a little bit of history to it. At first when I heard about this element I thought it was some type of gas but it can turn it to a liquid at a certain type of liquid. But is actually a very shiny type of metal. Rubidium was discovered by Kirchoff and Bunsen in 1861 through the use of a spectroscope. Rubidium metal…...
ChemistryMaterialsPhysicsSodium
Sales Skills & Situations Compared
Compare and contrast the personal selling skills and processes used in two different selling situations” Introduction: In this task I am going to compare and contrast the personal selling skills and processes used in the two different situations. One situation is over the phone and the other one is face to face communication. Comparison: In both situations the seller over the phone and the person speaking face to face have to greet the customers because they want to tell the…...
Body LanguageCommunicationContrastCustomerLifeReputation
Compare And Contrast Essay On Bradbury
The following sample essay on Compare and Contrast Essay on Bradbury Ray Bradbury’s opinions can be seen throughout many of his works. He focuses on three main themes in his two works of “A Sound of Thunder” and “There Will Come Soft Rains”. The first Bradbury focuses on mankind’s cruel and selfish acts. In addition, technology is dangerous when misused. Finally, nature is being negatively affected greatly by humans and their technology. If Bradbury didn’t think mankind had a negative…...
A Sound Of ThunderContrast
Pressure Die Casting
Presentation Pressure Die Casting Sam Mande Deepak Ch Veera Pratap Vamsi raj J (BUB0912011) (BUB0912016) (BUB0912013) (BUB0912010) M. Sc. (Engg. ) in Engineering Manufacturing and Management Module Leader : Dr N S Mahesh M. S. Ramaiah School of Advanced Studies 1 History Casting since about 4000 BC… Ancient Greece; bronze statue casting 450BC Iron works in early Europe, e. g. cast iron cannons from England 1543 2 M. S. Ramaiah School of Advanced Studies Introduction Die casting is a very…...
ChemistryIndustryMaterialsMechanical Engineering
Sample of Chapter 2 of an Investigatory Project (Steam-Powered Toy Car)
Chapter 2 REVIEW OF RELATED LITERATURE AND STUDIES Introduction This chapter indicates the ideas, also the history, relevant to the experiment to provide information and further elaborate different standpoints that were the foundation of the proposed study, also on the background study of the different methods and concepts used by other researchers that applies to the present study. In order to develop new method and procedures, careful review of literature and studies must be done for the development of the…...
ChemistryEvaporationHeatLearningMechanical EngineeringProject
Application of Colloids
Applications of Colloids| Colloids play a very important role in nature, in our daily life and in industry. Some of the important applications of colloids are discussed below. 1. Food stuffs and medicines: Many of our food stuffs are colloidal in nature. Milk, butter, whipped cream, fruit jellies, ice cream, bread etc. are all colloidal in nature. For example, milk is an emulsion of butter fat in water, stabilized by milk protein (casein). Ice cream is a dispersion of colloidal ice…...
ChemistryLightMaterialsSoapWater
Effects Packaging Materials on Shelf Life
The following example essay talks about the impact of packaging materials on shelf life. Read the introduction, body and conclusion of the essay, scroll down. THE EFFECTS OF PACKAGING MATEIAL ON SHELF LIFE OF CRACKERS Introduction The type of food, chemical composition, size, storage conditions, expected shelf life, moisture content, aroma and appearance are just a few of the characteristics that must be taken into consideration when selecting the right material for a food product. A continuing trend in food packaging…...
ChemistryMaterials
IMAT Test Analysis
THE ITALIAN UNIVERSITIES’ INTERNATIONAL MEDICAL ADMISSIONS TEST (IMAT) TEST SPECIFICATION In partnership with Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR) February 2013 Test Specification Test Format The IMAT will have the same structure as the existing Italian test. Candidates are allowed a total of 90 minutes to complete the test. Section 1 General Knowledge and Logical Reasoning (Critical Thinking and Problem Solving) 30 multiple-choice questions. Sections 2, 3 and 4 Science-based sections, covering: Biology; Chemistry; Physics & Mathematics. 30 multiple-choice…...
ChemistryCircleEvolutionForceHeatHeredity
Air Conditioning
HVAC Systems: Air Conditioning Dr. Harjit Singh Room 116 Howell Building harjit. singh@brunel. ac. uk Fridays 09. 30 – 11. 30am Unless otherwise specified For students enquiries: 1 Building Services Engineering: Building Air Conditioning Module (ME5508), Brunel University Introduction to the module • Credit: 15 • Teaching materials: – Provided for the MSc students. – Undergrads: Buy them from the stores. • Assignment: to be handed two weeks before Xmas, deadline-28 Jan 2013 • Students enquiries: – Fridays 09. 30…...
ChemistryEvaporationMechanical EngineeringPhysicsThermodynamics
Discovery of the Structure of DNA
The following sample essay on Discovery of the Structure of DNA is about the DNA molecule and Rosalind Franklin, who made a significant contribution to the discovery of DNA structure. By the year 1952, much was known about the DNA molecule, including its exclusive role as a genetic material capable of storing nearly all the genetic information required to create a living being. The fact that was not known at that time was how the DNA molecule looked like, or…...
BiologyChemistryDna
CHM2211L Experiment #3
Recrystallization most common method for purifying solid organic compounds In this experiment, we recrystallize and obtain the melting point for 2 compounds and synthesize a third. What are the solid compounds? acetanilide trans-cinnamic acid caffeine salicylate Acetanilide recrystallization solvent H2O trans-Cinnamic Acid recrystallization solvent CH3CH2OH/H2O Caffeine Salicylate recrystallization solvent Pet ether or Ligroine Caffeine is a base and will react with an acid to give a salt When reacted with salicylic acid, caffeine forms a salt derivative, caffeine salicylate, which…...
ChemistryFlashcardsMaterials
Comparing ATI, CTI, and Traditional Instruction Models
Institution: Faculty: Department: Three Instructional Approaches Submitted to Instructor: In partial fulfillment of the course requirements for Course: Name: Date: Three Instructional Approaches: ATI, CTI, and the Standard Traditional Model There are two best-known and widely used classes of instruction methods. These are the Standard Traditional Method and the adaptive methods. The adaptive methods include two major approaches, Aptitude Treatment Interaction (ATI) and Content Treatment Interaction (CTI). All of these approaches focus on imparting the learner with information and an…...
CommunicationContrastLearningLifeModelResearch
Study of The Influence of Leading Guestions On The Testimony Of Eyewitnesses
The following sample essay on Study of The Influence of Leading Questions On The Testimony Of Eyewitnesses. The hypothesis was that leading questions would have a significant effect on memory recall. This draws on results of a study by Loftus & Zanni whose research indicated that leading questions increase the number of incorrectly recalled details. Participants were selected by opportunity sampling. The chosen study group were given a briefing and told that they could leave at anytime if they wished…...
ExperimentHypothesisLearningScientific MethodStudy
Physics Data Analysis coursework
This coursework assignment requires me analyse and evaluate data on copper and constantan given to me. It entails investigating the young's modulus of the metal and alloy. Thus I will use many methods during to complete my investigation. Aims: 1. To draw stress and strain graphs for the metal copper and the alloy constantan 2. To calculate the figures of young's modulus for copper and constantan 3. To discuss the physics involved Plan: In this investigation I have received results…...
ChemistryCopperData AnalysisExperimentForceHealth
Concentration’s effect on Mg and HCl reaction rate
In this investigation I will be measuring the rate of reaction between magnesium and hydrochloric acid. The rate of a reaction tells us how quickly a chemical reaction happens. Reaction Rate = change in volume, mass or concentration of substance Time taken There are two ways to measure the rate of a reaction, by observing how quickly the reactants are used up or by observing how quickly the products are formed. Measurements of the rate of reaction can be taken…...
Chemical ReactionChemistryEnergyMaterialsPhysics
Dickens’ Schoolmasters in Copperfield vs Hard Times
Both Hard Times and David Copperfield show to us the harsh severity of the Victorian school system and the teachers that were around at the time. The two teachers I will be looking at are Mr. Gradgrind and Mr. Creakle. The first thing we notice about both of them is their distinctly gruesome, unattractive surnames. When you think of the name Creakle, you come up with the word creak. The word creak is a noise that you would associate with…...
ContrastEducationLifePhilosophySchoolScience
Wooing Women in Poetry
Andrew Marvell was born in the year sixteen-twenty one, in Yorkshire. He became a lecturer in Hull and was educated at Hull Grammar School, and in sixteen-thirty three he matriculated as a Sizar of Trinity College, Cambridge. Marvell wrote many poems, and 'To His Coy Mistress' was one of them. The poem was published in the seventeenth century and is a good example of love poetry in this century. Also in the seventeenth century, a poet called John Doone also…...
Andrew MarvellCommunicationContrastCulturePoetryTo His Coy Mistress
Synthesis of Cinnamaldehyde
Paper on Cinnamaldehyde Synthesis I. Introduction Cinnamaldehyde, cinnamic aldehyde or 3-phenyl-2-propenal is the major constituent of cinnamon oil, extracted from several species of Cinnamomum (C. verum, C. burmanii, C. cassia), under the family Lauraceae, a group of evergreen trees. Cinnamon bark (particularly C. verum) yields 0. 4-0. % oil, which contains 60-80% cinnamaldehyde, 4-5% sesquiterpenoids (? -humulene, ? -caryophyllene, limonene and others), eugenol, cinnamyl acetate, eugenol acetate, cinnamyl alcohol, methyl eugenol, benzaldehyde, benzyl benzoate, cuminaldehyde, monoterpenes (linalool, pinene, phellandrene and…...
Chemical ReactionChemistry
Enzyme Catalase
The following example essay on "Enzyme Catalase" describes a substance that catalyzes the decomposition of hydrogen peroxide formed during biological oxidation into water and molecular oxygen and is found in almost all organisms, and is involved in tissue respiration. Enzymes are proteins that function as biological catalysts (Perry, Morton 2007). They maintain the body’s stable internal balance, and without them life would be impossible (Sullivan, 2013). Enzymes are capable of speeding up reactions that otherwise would happen at a slower…...
BiologyCatChangeChemical ReactionChemistryEnzyme
Bio lab report on insulators
Foam is 5 percent air so the air molecules slow down the heat transfer from the liquid, so it stays warmer longer than cotton insulation. This leads me to predict that foam would be the best insulator, as it would trap the heat more, which will cause deficient heat lost. Identification of Variables There are three variables I will take in consideration whilst carrying out my investigation. The independent variable will be the types of materials used for insulation, which…...
ChemistryHeatMaterialsPhysicsThermodynamics
Lab Report APA Format
The purpose is also sometimes written as a separate section from the introduction. Theory (or Background pertaining to the experiment). This can include information from previous research, explanations of theories, methods or equations used, etc. ; for the example above, you might want to explain the theory behind acid/ base titration and a brief description of the setup and process you will use in the experiment. If research is done for this section, be sure to cite any sources used…...
ExperimentResearchTheory
How Table Salt Affects the Boiling Temperature of Water
What hypothesis can you generate about the effect of adding salt to water? Adding table salt to boiling water will cause the water to boil at a higher temperature. Experimental Design List the materials used in this lab, and the procedure you followed. Materials: 1 . Kitchen stove or electric hot plate 2. One 2-cup measuring cup 3. Measuring spoon set, with one tablespoon maximum 4. Table salt 5. Tap water 6. 2 quart cooking Pot (1/2) i don't have…...
DataExperimentHypothesisNatureScientific MethodWater
Carbohydrates lab report
Carbohydrates are a type of acquirement found in many foods and beverages. Most carbohydrates are naturally occurring in plant-based foods, such as grains. Food manufacturers also add carbohydrates to processed foods in the form of starch or added sugar. As with all our approaches to food ingredients/constituents we will first examine the structure of carbohydrates and then try to elucidate how their structures allow them to function as they do. As their name suggests, carbohydrates basically made up from sugar…...
Materials
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