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.
Gas Diffusion: An Overview
The sample paper on Gas Diffusion familiarizes the reader with the topic-related facts, theories, and approaches. Scroll down to read the entire paper.A lump of sugar added to a cup f black coffee eventually dissolves and then diffuses uniformly throughout the coffee. Perfume presents a pleasant fragrance which is imparted throughout the surrounding atmosphere. These are examples of mass transfer. Mass transfer plays a very important role in many industrial processes: the removal of pollutants from plant discharge streams by…...
ChemistryEvaporationMechanical EngineeringPhysicsThermodynamics
Fungal Amylase Optimum Temperature
This sample of an academic paper on Fungal Amylase Optimum Temperature reveals arguments and important aspects of this topic. Read this essay's introduction, body paragraphs and the conclusion below.Fungal and bacterial amylase are the enzymes that we going to study for their ability to break down starch. In order to determine how temperature affects the activity of amylase enzyme and the optimal temperature for fungal and bacterial amylase, the activity of these enzymes were tested at different temperature and times…...
BiologyChemical ReactionChemistryEnzyme
Determination Of Water Hardness
This sample of an academic paper on Determination Of Water Hardness reveals arguments and important aspects of this topic. Read this essay's introduction, body paragraphs and the conclusion below.ABSTRACT The average concentration of CaCO3 obtained was 212 ppm, with a standard deviation of 1 ppt. The results indicate that the unk B tap water can be considered as hard water. INTRODUCTION Hard water is due to metal ions (minerals) that are dissolved in the ground water. These minerals include Ca…...
Calcium CarbonateChemistryMaterialsNaturePhTitration
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Carabao Dung as Mosquito Repellent: Important Aspects
This sample of an academic paper on Carabao Dung reveals arguments and important aspects of this topic. Read this essay's introduction, body paragraphs and the conclusion below. Carabao Manure THE EFFICIENCY OF CARABAO MANURE WITH EXTRACT OF EUCALYPTUS (Eucalyptus cinerea) AND LEMONGRASS (Cymbopogon citrates) LEAVES AS AN ALTERNATIVE MOSQUITO REPELLANT Background of the Study Dengue victims are abundantly spreading in our society and they are caused by the known Aedes aegypti. These mosquitoes are merely found in places where there…...
Dengue FeverExperimentResearch
Compare And Contrast Qualitative And Quantitative Research
This sample of an academic paper on Compare And Contrast Qualitative And Quantitative Research reveals arguments and important aspects of this topic. Read this essay's introduction, body paragraphs and the conclusion below.Qualitative and Quantitative research methods Monique Gowans Charles Stuart University Compare and Contrast Qualitative and Quantitative Research Methods Qualitative research methods are complex meaningful analysis characterised by processes and meanings that are not experimentally examined or measured in terms of mathematical measurements (Lincoln, 2003; Sarantakos, 2005). Quantitative research however,…...
ContrastDataResearchScientific Method
Food Preservation Thesis
This sample of an academic paper on Food Preservation Thesis reveals arguments and important aspects of this topic. Read this essay's introduction, body paragraphs and the conclusion below.STUDENT NAMES & I. D. NUMBER: Tonja Thomas I. D # 807001358 Miranda Alexander I. D # 807000561 FACULTY: Science and Agriculture SEMESTER AND ACADEMIC YEAR: Summer (semester 3) 2009/2010 COURSE CODE: FOUN 1102 COURSE TITLE: Academic writing for different disciplines- Option C TUTOR’S NAME: Claudette Jessop TUTORIAL DAY AND TIME: Thursday 10-12noon…...
ChemistryFood IndustryFood SafetyNutrition
Caffeine Extraction From Tea
The essay sample on Caffeine Extraction From Tea dwells on its problems, providing a shortened but comprehensive overview of basic facts and arguments related to it. To read the essay, scroll down.Extraction of Caffeine from Tea Leaves Marc Tugaoen, Kristine Vanzuela, Rafael Villanueva, Justeen Wong Department of Chemistry, University of Santo Tomas, Manila, Philippines Abstract This experiment has been divided into 4 set-ups, first was the solid-liquid extraction, next was the liquid-liquid extraction, then the sublimation and last was the…...
AddictionCaffeineChemistryMaterialsWater
Visking Tubing Experiment
The sample essay on Visking Tubing Experiment deals with a framework of research-based facts, approaches, and arguments concerning this theme. To see the essay's introduction, body paragraphs and conclusion, read on.Aim:- To find out what happens when potato chips are put in different strength sugar solutions.Prediction:- I think that the chips we place in the stronger solution will shorten in length. In the distilled water I think that the length will increase. The amount that the chips shorten will be…...
ChemistryOsmosisWater
Factors Affecting Food Spoilage
This essay sample on Factors Affecting Food Spoilage provides all necessary basic information on this matter, including the most common "for and against" arguments. Below are the introduction, body and conclusion parts of this essay.As all the food that is consumed is biological and not synthetic, they are always susceptible to get spoilt. The leading cause for much of food spoilage is microbes. Not all microbes have a negative effect on the food that they act upon. For example, microbes…...
ChemistryMilkNutritionWater
Standardization Of Potassium Permanganate Lab Report Discussion
This sample paper on Standardization Of Potassium Permanganate Lab Report Discussion offers a framework of relevant facts based on recent research in the field. Read the introductory part, body, and conclusion of the paper below.Introduction: In this experiment, it is a redox titration method to standardize a solution of potassium manganate(VII) by an iron(II) salt (ammonium iron(II) sulphate). So, the word of redox is related to the oxidation and reduction. Oxidation numbers describe the number of electrons the atom will…...
ChemistryGmoMaterialsTitration
Animal Testing Essays
This sample paper on Animal Testing Essays offers a framework of relevant facts based on recent research in the field. Read the introductory part, body, and conclusion of the paper below.In 1960s, about 10,000 babies who have short and malfunctioned legs and arms were born, surprising the public and scientists. People were worried and anxious to know the reason for the tragedy and the way to avoid the birth of defect babies. After many researches, scientists found out that the…...
Animal TestingExperimentMedicineResearchSuffering
Calibration of Temperature and Pressure Sensors
The goal of this lab project was to calibrate temperature and pressure measurement systems. The systems we calibrated, were the Omega Model PX-236-060GV Piezoresistive Pressure Transducer, a thermocouple, and a thermistor. In order to obtain more accurate and precise readings, an AMTEK Model RK Deadweight Pressure Tester was utilized to calibrate an Omega Model PX236-06GV Piezoresistive Pressure Transducer. We had to add metal plates in increments of 5 psig until we reached 60 psig to a deadweight tester. The way…...
ExperimentPressureScientific Method
Composition Of A Mixture Lab Report
This sample paper on Composition Of A Mixture Lab Report offers a framework of relevant facts based on recent research in the field. Read the introductory part, body, and conclusion of the paper below.In order to operate the iron from the mixture, take a bar magnet inside of a Copilot bag, and swirl it through the mixture. 5. The iron will stick to the magnet, and lift the magnet out of the mixture. All iron in the mixture should be…...
ChemistryCompositionManufacturingMaterialsPhysicsWater
Gas Laws Lab Report
The sample essay on Gas Laws Lab Report deals with a framework of research-based facts, approaches, and arguments concerning this theme. To see the essay's introduction, body paragraphs and conclusion, read on.Obtain a reference of pressures effects on gas using Bole’s law using a gas sample of standard “air” within a syringe and measuring pressures increase and decrease in association to changing volume. Measurements are obtained through microbial sensors and graphed using microbial software where a correlation coefficient of P…...
DataExperimentHeatPhysicsPressureWater
Synthesis Of Triphenylmethanol
The following sample essay on Synthesis Of Triphenylmethanol discusses it in detail, offering basic facts and pros and cons associated with it. To read the essay's introduction, body and conclusion, scroll down.A Grinded reagent is a type of ergonomically, which consists of a bond twine a metal and a carbon. There are three types of carbon-metal bonds: ionic, polar covalent, and covalent. The ionic bonded compounds (example: RNa) have a weak bond between the carbon and the metal, and are…...
AlcoholChemical ReactionChemistryHobbyMaterialsOxygen
Molar Mass Of Propanol
This sample paper on Molar Mass Of Propanol offers a framework of relevant facts based on recent research in the field. Read the introductory part, body, and conclusion of the paper below.The energy released by a fuel depends on two things. Firstly the number of bonds to be broken and made and secondly the type of bonds involved. Therefore from the preliminary work I can see that propanol has similar type bonds to ethanol, but it has more of them.…...
ChemistryEnergyEvaporationHeatPhysics
Sample Essay on Milgram Experiment Essay
This simple experiment demonstrates how people behave in concrete situations. It tested how much pain an ordinary citizen could inflict on another person simply because he was commanded by authority. Stanley Milgram experiment was conducted to shed light on how the Nazi used the apparatus of Germany to exterminate Jews and other nationalities who were considered undesirable by the Nazis in Europe during the war. Social psychologists believe that at that time the only fringe segment of society is…...
ExperimentHuman NaturePsychologyViolence
Boiled Lipase And Unboiled Lipase
This sample essay on Boiled Lipase And Unboiled Lipase provides important aspects of the issue and arguments for and against as well as the needed facts. Read on this essay's introduction, body paragraphs, and conclusion.AIM: Lipases hydrolize fats into glycerol and fatty acids1, therefor to investigate how different amount (1 cm3, 2 cm3, 4 cm3, 8 cm3, 12 cm3, 20 cm3) of 3% lipase solutions break down the fat in 5 cm3 of milk.RESEARCH QUESTION: how fast can different amount…...
ChemistryExperimentPhSodium
Epsom Paper Overview
The sample paper on Epsom Paper familiarizes the reader with the topic-related facts, theories, and approaches. Scroll down to read the entire paper.We can see clearly from these graphs that as the concentration increases so does the rate of reaction. From the relatively straight lines of best fit we can tell that the rate of reaction is continuous with each different concentration. Scientific Model: From these results we can tell that as the concentration of H2SO4; when increased in the…...
Chemical ReactionChemistryConcentrationExperimentWater
Characteristics Of Primary Standard Solution
The following academic paper highlights the up-to-date issues and questions of Characteristics Of Primary Standard Solution. This sample provides just some ideas on how this topic can be analyzed and discussed. Primary standards, such as potassium hydrogen phthalate (KHP) (C8H5KO4), display unique characteristics such as high purity, maintain stability during storage within a long period of time whether in solid or liquid form, large molar mass as calculated to be 204 (RMM), low reactivity with the surrounding air, high stoichiometry…...
CharacterChemistryTitration
Sample Essay on Smallest Beaker Size
Planning: I will make sure I devise a fair test by doing things correctly and fairly. The only variable I will be obtaining will be the temperature of the water at 80oc, and I will make sure it is fair by testing it with a thermometer. I will also make sure it is a fair test by adding more water into the bigger beakers because it wont all fit into the smaller ones so that will give the smaller…...
ExperimentWater
Zimbardo’s Prison Study Method
The following sample essay on What Research Method Was Used In Philip Zimbardo’s Study, The “stanford County Prison”? discusses it in detail, offering basic facts and pros and cons associated with it. To read the essay's introduction, body and conclusion, scroll down.The Sociological Investigation ~ These notes are taken and adapted from Macionis, John J. (2012). Sociology (14th Edition). Boston: Pearson Education Inc. There are two basic requirements for sociological investigation: 1. Know how to apply the sociological perspective or…...
CrimeEducationExperimentLearningPrisonResearch
Photosynthesis Ib
This sample paper on Photosynthesis Ib offers a framework of relevant facts based on recent research in the field. Read the introductory part, body, and conclusion of the paper below.This process takes place in he chloroplasts of plants, which include chlorophyll. Chlorophyll is essential for photosynthesis, since it absorbs the sun’s light. Green plants then use this light to combine CO and H2O for making sugars and oxygen. After this process Oxygen is being released though pores called stomata. The…...
BiologyChemistryColorDataLightPhotosynthesis
Ammeter Reading
The following example essay on "Ammeter Reading" discusses it in detail, offering basic facts and pros and cons associated with it. The article answers the questions how the length of a wire affects its resistance and what Is The Reading On The Ammeter? Metal is a good conductor of electricity. This is because their atoms contain small negatively charged particles called electrons. Some of these electrons are not fully attached to their atoms. This means that they can be easily…...
ChemistryElectricityForceLearningPhysicsReading
Christianity & Islam Attitudes Toward Merchants & Trade: A DBQ
The following sample essay on Compare And Contrast The Attitudes Of Christianity And Islam Toward Merchants And Trade Dbq discusses it in detail, offering basic facts and pros and cons associated with it. To read the essay's introduction, body and conclusion, scroll down.Using the Documents, compare and contrast the differences of Christian and Islamic attitudes towards merchants until about 1500. From a review of the 7 documents presented, it is clear that Christianity and Islam condemned inequitable trade, which led…...
AttitudeChristianityContrastIslamLifePersonality
How Do Fossil Fuels Affect The Environment
This sample essay on How Do Fossil Fuels Affect The Environment provides important aspects of the issue and arguments for and against as well as the needed facts. Read on this essay's introduction, body paragraphs, and conclusion.Describe and explain how the use of Fossil fuels may affect the environment and discuss measures, which could be taken to reduce the harmful consequences Fossil fuels include gasoline, oil, coal, or natural gas. Whenever we burn them, more pollutant gases are emitted into…...
Carbon DioxideChemistryClimate ChangeFossil FuelsGreenhouse GasMaterials
Photosynthesis Lab Report Example
This sample essay on Photosynthesis Lab Report Example provides important aspects of the issue and arguments for and against as well as the needed facts. Read on this essay's introduction, body paragraphs, and conclusion.The following terms were used in this experiment – Photosynthesis: Photosynthesis is the process of converting light energy to chemical energy and storing it in the bonds of sugar. This process occurs in plants and some algae. Plants need only light energy, CO, and H2O to make…...
BiologyCarbon DioxideChemistryPhotosynthesis
Pros and Cons of Natural Convection and Radiation
Natural convection is more prevalent at lower temperatures whereas radiation is more prevalent at higher temperatures Possible Sources of error: conduction from the heated cylinder to its housing tube changes in ambient temperature Variations in surface temperature Heat Transfer by Convection and uses possible Heat typically does not flow through liquids and gases by means of conduction. Liquids and gases are fluids, their particles are not fixed in place, they move bout the bulk of the sample of matter. The…...
ChemistryEnergyHeatPhysics
Crayfish Lab: A Brief Overview
The following sample essay on Crayfish Lab it's the academic paper highlights the up-to-date issues and questions of Crayfish Lab. This sample provides just some ideas on how this topic can be analyzed and discussed. In our classroom experiment, after dissecting and preparing our crayfish ail, we sucked up a MR.. Receptor neuron with our electrode to record firing of the nerve as we adjusted the length of the crayfish tail using a string attached to both the uncomplimentary and…...
BiologyBrainExperimentNervous SystemNeuron
Hypothetical Essay
This sample of an academic paper on Hypothetical Essay reveals arguments and important aspects of this topic. Read this essay's introduction, body paragraphs and the conclusion below.Optimum temperature for the enzymatic activity of salivary amylase ranges from ICC to 37 co and its optimum H ranges from 6 to 7. Graph of the time reciprocal against temperature and pH both produced bell-shaped curves. Introduction The chemical reactions occurring in living things are controlled by enzymes. An enzyme is a protein…...
Chemical ReactionChemistryEnzymePhProtein
Charles Law Lab Report
This sample paper on Charles Law Lab Report offers a framework of relevant facts based on recent research in the field. Read the introductory part, body, and conclusion of the paper below.The volume of the air sample at the high temperature, when the sample is cooled to the low enrapture and becomes. All of these measurements are made directly. The experimental data is then used to verify Charleston by two methods: 1. The experimental volume (V””o) measured at the low…...
ChemistryExperimentPressureWater
Calibrating A 50 Ml Buret Lab Report
This sample essay on Calibrating A 50 Ml Buret Lab Report offers an extensive list of facts and arguments related to it. The essay's introduction, body paragraphs, and the conclusion are provided below.The accuracy of the measurement the volumes is the degree of closeness of measurements of a quantity’s actual volumes while the precision of the volumes is the degree to which repeated agreements under unchanged conditions show the same results. Each of volumetric glassware is marked with its total…...
Experiment
Essay on Hess Cycle
The sample essay on Hess Cycle deals with a framework of research-based facts, approaches, and arguments concerning this theme. To see the essay's introduction, body paragraphs and conclusion, read on.The main idea behind this experiment is to find out the temperature difference between the room temperature and the final temperature. Sodium carbonate, sodium hydrogencarbonate and hydrochloric acid were used in this experiment. Sodium carbonate, also known as soda ash is got from the reaction of carbonic acid and sodium hydroxide…...
Chemical ReactionChemistryGmoMaterialsPhysicsSodium
Studies of Interference in Serial Verbal Reactions
This sample essay on This Paper Investigate provides important aspects of the issue and arguments for and against as well as the needed facts. Read on this essay's introduction, body paragraphs, and conclusion. The idea of investigating how the human mind perceives colored words is one of those aspects of life that most of us take for granted. In 1935, J. Ridley Stroop performed a series of experiments to examine this phenomenon. In his article, “Studies of Interference in Serial…...
ExperimentHuman NaturePsychologyStroop Effect
Particle In A Box Experiment
This sample essay on Particle In A Box Experiment offers an extensive list of facts and arguments related to it. The essay's introduction, body paragraphs, and the conclusion are provided below.The visible absorption bands or conjugated dye arise from electron transitions involving the electrons in the conjugated and they are free to move along the chain and are not attached to any atom. An example of such a dye is 3,3-diethyl-thiacyanine iodide. The cation has two resonance forms causing each…...
ChemistryEnergyPhysicsQuantum MechanicsScientific Method
What Is An Ohmic Resistor
This sample essay on Ohmic Resistor offers an extensive list of facts and arguments related to it. The essay's introduction, body paragraphs, and the conclusion are provided below. In order to understand what Ohms Law is all about you need to understand electricity and what makes Voltage, Current and Resistance in a circuit. What is Current? Current is the movement of electrons in a circuit but “What are electrons and what makes them move” All matter is made up of…...
ChemistryElectricityForcePhysics
Chlorophyll B Molar Mass
The following sample essay on Chlorophyll B Molar Mass discusses it in detail, offering basic facts and pros and cons associated with it. To read the essay's introduction, body and conclusion, scroll down.The polar absorbent material in the column separated the different pigments by allowing the least polar molecules to travel through the column faster than the more polar molecules. The different pigment layers were collected, dried, and their weights were recorded. џ-carotene was the least polar molecule, and it…...
Breast CancerChemistryDiseaseMaterials
Physical Attraction Essay
This sample of an academic paper on Physical Attraction Essay reveals arguments and important aspects of this topic. Read this essay's introduction, body paragraphs and the conclusion below.The sample was composed of 40 students from the University of Warwick, 20 males and 20 females, between 18 and 24 years of age. Equal numbers of male and female participants were used to counter the effects gender may place on perception of physical attractiveness. The subjects participated in the study on a…...
ExperimentHypothesisSocial PsychologyStatistics
Why Is Cotton Wool A Good Insulator
This sample paper on Why Is Cotton Wool A Good Insulator offers a framework of relevant facts based on recent research in the field. Read the introductory part, body, and conclusion of the paper below.Plan: The factor I will be changing is the type of insulator. The factor I will be recording is the temperature of the water in degrees for a total of six minutes. To record the temperature I will use a thermometer. The factors I will keep…...
ChemistryMaterialsPhysics
John Byam Liston Shaws 1901 oil painting
The following sample essay on "John Byam Liston Shaws 1901 oil painting": comparing John Byam Liston Shaws the Boer War and Lonacs work. Compare and Contrast Essay John Byam Liston Shaws 1901 oil painting pf the Boer War presents the theme of loss through the symbolism of birds. Similarly, birds are a recurring figure in the Croatian artist Lonacs work acting to convey a strong emotional message. However, unlike Shaw, Lonacs detailed public murals are primarily executed with spray paint…...
ArtContrastDiseaseHealthLifePain
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