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.
Osmosis Potato Lab Report Introduction
While molecules in diffusion move down a concentration gradient, molecules during osmosis both move down a concentration gradient as well as across it. Both diffusion, and osmosis are types of passive transport, which do not require help. When the concentration of the environment outside of the cell is lower than the inside of the cell, this is called a hypotonic solution. In hypotonic solutions, when water moves into the cell they burst, which is known as lists. A hypersonic solution…...
BiologyChemistry
Conductivity Lab Report
When an ionic compound forms, the anion transfers an electron to the action which creates an electrostatic bond and an electrically neutral compound. Also, they readily solve in aqueous solutions and are good conductors of heat and electricity. Further, ionic compounds can be classified as either strong conductors or weak conductors. In contrast, molecular compounds are formed from non-metals. Molecular compounds share electrons between atoms forming a covalent bond.Essay Example on Electrical Conductivity Lab In general, molecular compounds do not…...
ChemistryElectricityMaterialsPhysics
Voltaic Cell Experiment Lab Report
Voltaic cell is a device in which a redo reaction spontaneously occurs and produces an electric current. In order for the transfer of electrons in a redo reaction to produce an electric current and be useful, the electrons are made to pass through an external electrically conducting wire instead of being directly transferred between the oxidation and reducing agents. A salt bridge must be used to avoid popularization of the electrodes by facilitating the circulation of ions from electrolyte. Each…...
BiologyCellChemistryElectricityMaterials
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Compare And Contrast Two Famous Singers
Two singers: 50 cent and Jay Sean In the present time, it is without a shadow of a doubt, partly a fashion trend to listen to music vocalizes by highly professional singers. The youth, counting me, listen to beloved singers on portable amp’s on a constant basis. In other words, new fans of singers are emerging and gathering up as the singers gaining popularity. Bluntly put, the singer with the best song, image and with the highest spectators perceived as…...
CommunicationContrastCultureEnglish LanguageReasonSinging
Ionic And Covalent Compounds Lab Report
This experiment was divided in four steps to find the electrical conductivity of covalent and ionic solutions. There were four unknown solutes A, B and C. Each had a specific weight and was dissolved in a certain amount of solute to form either the covalent or ionic solution. Covalent compounds are made up of molecules which are electrically neutral. Ionic compounds are composed of ions, which are positively or negatively charged.Essay Example on Ionic And Covalent Bonds Lab Report Therefore…...
ChemistryExperimentMaterialsPhysics
Compare And Contrast The Boy In The Striped Pajamas Movie And Book Essay
This story Is both a tragic and extremely depressing book and a movie called The Boy In the Stripped Pajamas. The book and movie were both absolutely fantastic and were very much alike, but they still had some differences. The few differences between the movie and the book was, the ending of the book and movie, the perspective In which they were both told In, One of the major differences between the book and movie is the ending of each…...
CommunicationContrast
Carb Cutter Lab
This then prevents starch from converting into glucose and then to body fat. The crabs that aren’t absorbed then pass through the digestive tract and are excreted. From what we hear, the pill sounds like it will do wonders, but similar studies believe otherwise; “Studies by Mayo Clinic revealed that to decelerate the digestion of carbohydrate, you need between 4,000 to 6,000 MGM of bean extract or Episcopalian. Unfortunately, many Carr blockers in the market have lower than 4,000 MGM…...
CarbohydrateEnzymeExperimentGlucoseLight
Respiratory Physiology Lab Report
Timer (with a second hand) Glass Urinary and Salivary pH (litmus) paper Drinking straw Procedures: 1. Measure 2 ounces of water in a glass. Obtain the pH of the water in the glass. Record the water pH prior to experiment. Have the subject blow air through the straw into the water and keep blowing into the water for 2 minutes inhaling between exhalations. The subject should be breath as normal as possible while doing this activity. Measure and record the…...
CommunicationExperimentPhResearchWater
Cellular Respiration Lab Report
This is an investigation of the effect of the intensity of light (photosynthesis) have on the rate of cellular respiration (measured as the number of oxygen bubbles). We will determine whether or not it is possible to examine the relationship between photosynthesis and cellular respiration under controlled environmental conditions.Essay Example on Cellular Respiration Lab Report We will show the effects, reactions, and relationship between photosynthesis and respiration, as well as demonstrate to you how the scientific method works. Hypothesis Upon…...
ExperimentLightOxygenPhotosynthesis
Worm And Wheel Drive Practical Discussion
The worm and worm wheel is a very important mechanism in the field of Mechanical engineering. It has the ability to lift heavy loads with very little effort and keep the load raised and locked in a desired vertical position without any effort. The main objective of this experiment was to investigate the behavior of the worm and worm wheel gear set. Unfortunately, all the objectives of this experiment weren’t fulfilled in this session due to the following factors: The…...
ExperimentFrictionMechanical Engineering
Egg Drop Experiment Lab Report
Things we learned that was relevant to the lab were what Potential Energy and Kinetic Energy was. Potential Energy is stored energy due to objects relative position, while Kinetic energy was energy of motion; amount of energy depends on objects mass and velocity. The lab with the roller coaster showed examples of when the coaster was at the highest point that it had more Gravitational Potential energy and that by the time it reached the bottom or the lowest point…...
EnergyExperimentForceGravityPhysics
Love The Right Chemistry
The Right Chemistry,” Outfoxes mainly talks about love related to chemistry. The fact that human species, considered as sexual organs, possess own characteristics contributes to each Individual with a unique attraction. The term “love” has created the new way of making It ? a sexual relationship. Also. The concept of love nowadays seemingly depends on an individual’s appearance.Essay Example on Love: The Right Chemistry According to the author, romance is an essential element that leads men and women to long-term…...
ChemistryHuman NatureLifeLoveSocial Psychology
Solubility Of Potassium Nitrate Lab Report
The relationship is nonlinear, which means it isn’t form a straight line when plotted on a graph. Now, there are three main factors, which affect solubility (besides pressure). Temperature will affect solubility. If the solution process absorbs energy then the solubility will be increased as the temperature is increased. If the solution process releases energy then the solubility will decreased with increasing temperature. Molecular size will affect the solubility. The larger the molecule or the higher its molecular weight the…...
ChemistryMaterialsPhysics
Simple Pendulum Lab Report Introduction
The relationship between the length and the time for one swing (the period) has been researched for many centuries, and has allowed famous physicists like Isaac Newton and Galileo Galilee to obtain an accurate value for the gravitational acceleration ‘g. In this report, we will replicate their experiment, and we will try to find an accurate value for ‘X here in Pisa. We will then compare this value with the commonly accepted value of 9. 806 m/so [NIST, 2009] A…...
ExperimentGravityPhysicsTime
Isotopes Of Pennium Lab
The relative abundance of the pre 1 982 pennies was 50 percent, and the relative abundance of the post 1982 pennies was 50 percent. The atomic mass of Pentium that was calculated using these isotopes was 2. 795 grams. A possible source of error could have been that the scales may have not given the correct mass due to various possible technological issues. This would have affected the accuracy of the data, as well as the calculated atomic mass.Essay Example…...
CopperResearch
Paper Towel Experiment Lab Report
The purpose of this experiment is to find out which brand of paper towel, Decorator or Sparkle, is stronger and more absorbent. Of the two brands that will be tested, the Sparkle brand will absorb the most liquid because it has the “thirst” pockets and will be the strongest because it feels thicker. Materials and Methods For the first experiment we did the test for strength. We used a 600 ml beaker which we placed the sample paper towel over…...
CommunicationExperimentWater
Density Statistical Analysis Of Data
The methods used in this experiment were very basic, the instructions show how to read a burette and a balance; and tells how many significant figures have to use for ACH device. In order to take mass there was necessary to use a beaker to place the glass beads (the object that was going to be measured), and in order to don’t affect the mass or volume of the glass beads there was used forceps. Another methods used in this…...
DensityExperimentMeanScientific MethodStatistics
Carrot Osmosis Lab Report
The process of Natural Importance Introduction Osmosis is when a fluid passes threw a semi permeable membrane. Moving from an area in which a solute such as salt is present in low concentrations to an area in which the solute is present in high concentrations. There are three types of osmosis: hypersonic is when there is high concentration and the cell has no water inside it (shrunk), hypotonic is when there is low concentration and the cell has swelled up…...
ChemistryOsmosis
Material Hardness Experiments
The purpose of the following experiments is to study the hardness of different types of materials, and to understand the significance of this property in materials. The materials and the aforesaid property have significant use in civil engineering. Hardness is defined as a measure oaf material’s resistance to localized plastic deformation (i. E. Small dents or scratches). As said above, a variety of metal alloys were used in the experiments to understand how each of these metals is characterized as…...
ChemistryMaterialsMechanical Engineering
Organic Chemistry Boiling Point Lab Report
The purpose of this experiment is to determine the boiling points of various organic compounds and to use these to identify unknowns. Equipment / Materials: hot plate closed end capillary tube hermetic liquid organic compounds 250 ml beaker small test tube Safety:Essay Example on Organic Chemistry Boiling Point Lab Report Always wear safety glasses in the lab. Capillary tubes break very easily, handle them with caution. Be careful with the thermometer. Proceed re: Place a few millimeters of a known…...
ChemistryExperimentWater
Potato Osmolarity Lab Report Ib
The pieces that will be placed in the solution with the lowest concentration of salt will have small weight loss. Finally, the pieces that will be placed in water (Nasal concentration O) will gain weight. This is expected because of the phenomenon of osmosis which was examined in a previous lab. Variables: Independent: concentration (%) of salt (Nasal) Dependent: mass (g) change Controlled: * shape and material of the beakers * size and weight of the potato pieces * volume…...
ChemistryConcentrationOsmosisWater
The Solute Dissociates Slightly In The Solvent
The melting point will be lower than expected. 5. Part B. 2. The solute dissociates slightly in the solvent. How will the slight dissociation affect the reported molar mass of the solute- too high, too low, or unaffected? Explain. The solute dissociating slightly will cause you to calculate a molar mass that is too small if you neglect the dissociation by assuming i=l instead of the correct value of i, which is 6. Part B. 3.Essay Example on Stress Concentration…...
ChemistryPhysicsThermodynamics
Hess Law Experiment Lab Report
The literature value tort the enthalpy change of the last reaction which was provided by our teacher is -97 k mol-l Agreeing this value, our result can be considered accurate. As told at the beginning of this lab report, our aim of this experiment was to test the validity of He’s law which suggests that the enthalpy change of a reaction must be equal to the sum of the enthalpy changes of the other reactions that elate to the original…...
CommunicationExperimentHeatResearch
Sowbug Lab Report
The factors that could have affected this experiment are endogenous, which are frequently correlated with environmental changes such as light, temperature, and relative humidity. They were taken from their natural habitat and put into a room with different temperature and lighting than what they are used to. Another factor to be considered is that although many species are active during a certain period of day or night and are quiescent for the remainder of the 24 hours, some exhibit different…...
ExperimentPrivacyResearch
Magnesium Oxide Lab
The duration of this experiment it is a must to wear safety glasses and lab coat at all times during the lab, even when not working directly with the chemicals r apparatus. 2. Do not touch the apparatus, during the experiment it may still be which further can lead to burns. 3. Be careful around the Bunsen burner, even when switched off – they may still be hot! 4. Do not inhale the magnesium ribbon. 5. Do not touch the…...
ChemistryDataExperimentMaterials
Viscosity Of Water Lab Report
The distance at which the sphere was dropped from, could have affected the terminal velocity. By doing a reverse engineering calculation using the equation given in the lab sheet for Castro oil (0. 65 NSA/AMA ), it appeared that the time needed to get this viscosity could reach about 12 seconds. This was quite impossible in our experiment to be obtained. Accordingly, one possible justification for this problem could have been the liquid unknown type, which we assumed to be…...
ExperimentNaturePhysicsWater
Banana Peel As Water Purifier Thesis
The Banana is a kind of herb that is usually consumed as either food or flavoring. Its peel is often deemed as useless or without any use that It Is Just thrown away. But are banana peels as useless as people think? Banana Peels have Potassium (K) that commonly helps clean your body and is used to manufacture Today, many fleshes have been dying due to polluted waters and careless soap. Oil spills. Fishes are a food source to many…...
ChemistryFishMaterialsNaturePhWater
Surfactant Lab Report
Surfactant is produced to make it easier for people to breath by reducing the surface tension of the water molecules that primarily compose the walls of the alveoli; it helps them to not tick together. For this experiment, we will be using milk and food coloring to represent the water (milk) and gas (food coloring) in the respiratory system. Because know milk is non-polar and food coloring is polar, my hypothesis predicts the two will not mix voluntarily at first,…...
ChemistryMilkRespiratory SystemSoapWater
Sand And Salt Separation Lab Report
Some of the salt may be lost if the salt doesn’t dissolve completely or if some of the salt water is spilled – this can be avoided by making sure that all of the salt has dissolved, and by being very careful while stirring the mixture not to spill it. Procedure: 1. Place a small beaker on the balance. Press the rezone button to make sure to take the mass of only the sand and salt sample and not the…...
ChemistryEvaporationIndustryManufacturingMaterialsWater
Biodegradable Plastic Essay
Most manufacturers nowadays produce bio-degradable plastic bags. Environment organizations and advocates promote this. Bio-degradable suggests they breakdown faster in comparison with other plastic items which take thousands of years to decay. Lots of consumers debate that this particular type just isn’t as sturdy as the traditional plastic bags. Environment experts, nevertheless, demonstrate that this feature does not affect its durability as a container of various goods. Lots of individuals also believe paper bags are better than plastic bags.Essay Example on…...
ManufacturingMaterialsPlasticPollutionRecyclingWaste
Global Warming And Remedial Measures Essay
Most of the governments all over the world have laws by which no one is suppose to exceed creating pollution in air or water beyond prescribed limits. Law breakers often face punishments to the tune of heavy fines and even stoppage of work. Opal, India gas tragedy is the best example to explain the necessity to take adds Tate measures to control pollution. Thousands of people were affected due to lack of adequate measures. The managing director of the company…...
Air PollutionChemistryGlobal WarmingHistoryMaterialsPollution
Beanium Lab Answers
Nigerian beans, Mexican beans, calculator, and paper. Raw Data Bean Total Mass w/ Cup Number of Beans American Beans 17. 489 g 75 Nigerian Beans 5. 95 g 25 Mexican Beans 3. 106 g 53 Calculated Data/Graphs Total Mass w/o cup Average of each Bean Average Atomic Mass American bean 16. 749 g . 2233 g Nigerian bean 5. 255 g . 2102 g Mexican bean 2. 366 g . 0586 g . Eggs Sample Calculation Error Analysis During this…...
CommunicationExperiment
Solution Of Land Pollution
Land pollution Land pollution is mainly caused by poor solid waste management. There are three answers to these environmental problems. YOU can Reduce, Reuse and Recycle. ; Reduction ; Reuse ; Recycle Reduction We can reduce the amount of waste that is produced by doing simple things like two-sided copying on paper and backyard composting. This will decrease the amount of waste that will be disposed of in landfills.Essay Example on Solution To Land Pollution The Government can raise awareness…...
ManufacturingMaterialsPollutionRecyclingWasteWaste Management
Osmosis Potato Experiment Control Variables
Living organisms tend towards balance with their environment. Cells achieve this through diffusion. This is the random movement of solutes from an area of higher concentration to lower concentration. Osmosis is a special case of diffusion. Osmosis is the movement of water through a selectively permeable membrane. During osmosis, water molecules diffuse through the membrane from a region of higher water potential to lower water potential until equilibrium is reached. (1) In this lab, the idea was to see how…...
ChemistryOsmosisWater
Essay Example on Ib Biology Enzyme Lab Ideas
Investigating the effect of changing substrate concentration on the activity of the enzyme catalane The aim of this experiment is to examine how the concentration of a substrate (hydrogen peroxide) affects the rate of reaction of an enzyme catalyst (found in liver cells) Research Question: how does changing the concentration of the substrate affect the rate of reaction of the enzyme catalyst? Hypothesis: As the concentration of the substrate increases, so does the rate of reaction until the reaction reaches…...
Chemical ReactionChemistryEnzymeExperimentWater
Lab Report On Volumetric Analysis
It must be understood that the number of moles of the reacting Noah and the number of moles of the product Nag acid, must both equal (in this case 1 11) in order for the calculation to find the molar mass to work. Procedure: Begin the procedure by first making sure all glassware has been cleaned. Next set up the burette for the titration using the same method as week 1. Similar to week 1 the titration is performed using…...
ChemistryTitration
Restriction Enzyme Lab Report
It is thought that, together with enzymes that methyl portions of native DNA, restriction enzymes protect cells from DNA of invading organisms cutting such DNA into pieces, thereby restricting its activity. In this experiment, using agrees gel electrophoresis, the number and relative positions of restriction sites for three restriction enzymes, Score, Hinkle and Pull, on the circular plasmid abrupt were mapped by determining the length (in base pairs) of the DNA fragments obtained when cutting the plasmid with each of…...
BiologyBiotechnologyChemistryDnaGenetics
Combustion Of Acetylene Lab Answers
Incomplete combustion is the reaction of an element or compound tit oxygen to produce some oxides with less oxygen than the most common oxides. Incomplete combustion occurs when there is not enough oxygen to react completely, not all fuel is used. This may result in the formation of solid carbon a black residue. Procedure The lab was performed on 25 October 2012, the lab results obtained from Ms. Reynolds. Safety precautions were to not breath in the acetylene gas.Essay Example…...
ChemistryMaterialsOxygenWater
Endothermic And Exothermic Reactions Lab Conclusion
In endothermic reactions heat Vass absorbed. This avgas discerned by the temperature drop and the test tube became cool to touchy Reactions such as ‘Potassium Chloride crystals [s] Water were. Some vigorous reactions {reactions that occurred at a fast pace} were ‘Sodium Hydroxide [I] * Dilute hydrochloric acid [as]’, ‘Sodium Carbonate [s] + Ethanol Acid [l]’ and ‘Magnesium ribbon [s] Dilute Sulfuric Acid [I]’ (mostly reactions involving strong acids + throng bases}. There was no sound or light given off…...
Chemical ReactionChemistryMaterials
Egg Drop Physical Experiment Essay
In our physic class we did an egg drop experiment. We used some vocabulary words to answer the question also did formulas to solve some problems. The question that we are referring to is “will an egg break or be secured”. Our idea was to secure the egg from breaking and we wanted to design something that would provide a lot of cushioning directly on the egg. So we came up with many different ideas until we chose the one…...
CommunicationExperimentPrivacy
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