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Chemistry - Free Essay Examples and Topic Ideas

Chemistry is a natural science that deals with the composition and behavior of matter. It focuses on the study of atoms, molecules, and their interactions with one another. Chemistry is an essential field of science that advances our understanding of the world around us and enables us to develop new materials, medicines, and technologies. From the smallest subatomic particles to the largest chemical reactions, chemistry helps us comprehend, predict, and manipulate the properties and transformations of matter.

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  1. 1
    Rate of Diffusion
    Words • 1510
    Pages • 6

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    Paper Type:1500 Word Essay Examples
    To test the effect of molecular weight on the rate of diffusion, various experiments were performed. One of which is the glass tube test wherein cotton balls of the same size were moistened in two different substances (NH4OH and HCl). These cotton balls were plugged at each side of a glass tube. After some time, formation of a white ring occurred. The white ring, in fact, is a product of the reaction between the molecules of ammonia (NH3) and hydrochloric…
    DiffusionNature
  2. 2
    Melting Point Determination
    Words • 1680
    Pages • 7

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    Paper Type:1600 Word Essay Examples
    Identifying an unknown compound can be a difficult task. In identifying a compound, researchers often measure several physical properties: melting point, boiling point, density and observes a few chemical properties: reactivity, acidity, basicity of the compound. The reason for determining several chemical and physical properties of the compound is that it is quite possible for two different compounds to have a few physical and or chemical properties in common; but it is highly unlikely for the two compounds to have…
    ChemistryEquilibrium constantResearchScience
  3. 3
    Stoichiometry of a Precipitation Reaction
    Words • 1538
    Pages • 6

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    Paper Type:1500 Word Essay Examples
    Abstract: In this experiment Stoichiometry of a Precipitation Reaction, the main objectives were to use stoichiometry to calculate the theoretical yield of CaCO3 that precipitates from the reaction between Calcium chloride, Dihydrate and Sodium carbonate, and then compare that value to the actual yield. In order to do this accurately, we must be able to measure the products and reactants with accuracy. The last objective of this experiment is to calculate the percent yield of the product produced. When 1.0…
    Calcium carbonateChemistry Stoichiometry
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  4. 4
    Effect of lipid solubility on permeability of plasma membrane
    Words • 1032
    Pages • 4

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    Paper Type:1200 Word Essay ExamplesCause And Effect Essay
    : To study the effect of lipid solubility of molecules on permeability of plasma membrane of animal cell. Introduction : Diffusion: In general, diffusion process occur when there is a concentration gradient between two region .Molecules (other than water) will move by diffusion as long as there is a concentration gradient. A concentration gradient exists when a particular type of molecule (like food coloring dye molecules) is not spread out in an even concentration, but exists in a higher concentration at…
    BiologyChemistryConcentrationScience
  5. 5
    Biology Concept. Vitamin C Content in Various Fruit Juice
    Words • 4367
    Pages • 16

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    Paper Type:4500 Word Essay Examples
    This experiment examined the effect of vitamin C content in fruit juice on DCPIP’s colour changes using acid-based titration method. A titration is a method of analysis that will allow us to determine the precise endpoint of a reaction and therefore the precise quantity of reactant in the titration flask. The objective of the experiment was to determine vitamin C content in various fruit juice which it is include freshly squeezed juice( orange and lemon), commercial juice(orange and lemon) and…
    BiologyFoodFruitLemonTitrationVitamin C
  6. 6
    Mercury Drug Research
    Words • 4885
    Pages • 18

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    Paper Type:4500 Word Essay Examples
    Mercury Drug Corporation is the Philippines' dominant pharmacy group. The Quezon City-based company operates a national chain of more than 450 drugstores, including company-owned and franchised stores. Mercury Drug is estimated to sell as much as 60 percent of all medicines sold each year in the Philippines (the country's hospitals sell about 12 percent of medicines). Mercury Drug's pharmacies follow the American model, combining drug and medical equipment sales with over-the-counter medicines, personal care items, basic household needs, cosmetics and…
    MercuryResearch
  7. 7
    Column and Thin Layer Chromatography
    Words • 1098
    Pages • 4

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    Paper Type:1000 Word Essay Examples
    Chromatography is a technique used to separate mixtures into components as a result of differential partitioning behavior between a stationary phase and a mobile phase that percolates through the stationary bed. [1, 2] Column and thin layer chromatography are examples of the solid-liquid method of chromatography, which utilizes an adsorbent solid stationary phase (silica) and a liquid mobile phase. In column chromatography, the solid stationary phase is situated within a tube as the liquid mobile phase is added to the…
    Chromatography
  8. 8
    Determination of Iron by Reaction with Permanganate-A Redox Titration
    Words • 774
    Pages • 3

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    Paper Type:750 Word Essay Examples
    The purpose of this experiment was to find the percentage of iron in an unknown iron oxide sample which could be determined through titration with a standard solution of potassium permanganate. Success in this analysis requires careful preparation and attention to detail. Performing this experiment also provides practice at titrations. The overall reaction is: 8H+(aq) + MnO4-(aq) + 5e-  Mn2+(aq) + 4H2O Theory: In acid solutions the permanganate ion undergoes reduction to manganese (2+) ion. Since the permanganate ion is…
    Titration
  9. 9
    The Evolution of Chemistry: From Alchemy to Modern Science
    Words • 598
    Pages • 3

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    Paper Type:550 Word Essay ExamplesCompare And Contrast EssaySimilarities and Differences Essay
    Introduction Chemistry, often misconstrued as merely an arena of mixing substances and causing explosions, is a multifaceted scientific discipline that permeates every facet of our existence. It delves into the composition of matter, its transformations, and the intricate dance of chemical reactions. This essay explores the historical evolution of chemistry, from its roots in ancient Greece to the dichotomy between traditional alchemy and modern scientific chemistry. The Essence of Chemistry At its core, chemistry is the systematic exploration of matter…
    ChemistryNaturePhilosophyScience
  10. 10
    Separation and Purification of Organic Compounds
    Words • 716
    Pages • 3

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    Paper Type:700 Word Essay Examples
    Abstract The distillation process was successfully done because of the separation of water from the acetone. When the distillate was lighted with the matchstick it produced flame which indicates that there was more presence of acetone than water. When the sodium nitroprusside, sodium hydroxide and glacial acetic acid was added to the distillate, it turned to violet. This means that there is the presence of ketone. Introduction Distillation is the process heating a liquid until it boils, then condensing and…
    ChemistryOrganic Compounds
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  11. 11
    Preparation of Cyclohexene From Cyclohexanol
    Words • 2544
    Pages • 10

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    Paper Type:2500 Word Essay Examples
    Abstract: A 42.89% yield cyclohexene was successfully synthesized from 10.0 mL cyclohexanol by unimolecular elimination (E1) through the dehydration of cyclohexanol and confirmed via a bromine test and the IR spectra. Introduction: Alkenes are hydrocarbons that have carbon–carbon double bonds and are one of the many functional groups in organic molecules. Alkenes are sp2 hybridized and are unsaturated because two of their hydrogen’s are missing from the saturated alkane formula (CnH2n+2). Typically alkenes are synthesized by elimination reactions, however, organic…
    ChemistryChemistry Stoichiometry
  12. 12
    Physio Ex 9.0 Activity 1 Cell Transport Mechanisms and Permeability
    Words • 1305
    Pages • 5

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    Paper Type:1300 Word Essay Examples
    ACTIVITY ONE- Cell Transport Mechanisms and Permeability: Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. Molecular weight affects the rate of diffusion because the bigger the size of the molecule the longer it will take to diffuse. Membrane size is another variable that affects the rate of diffusion because if the membrane’s pores are small it will take molecules longer to diffuse though it than if the pores were larger. Also, membrane thickness is…
    DiffusionOsmosisTransport
  13. 13
    Importance Of Chemistry
    Words • 922
    Pages • 4

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    Paper Type:550 Word Essay Examples
    Our entire universe is made up of matter which is constantly changing forms and evolving into other forms of energy. We use chemistry from the beginning of the day till its end, the toothpaste we use to brush our teeth is made of abrasives, fluoride, and detergents. These common household items contain batteries, which make them very chemically dependent. The purification our water by process of chlorination, dental cleanliness from toothpaste, sterilization, the control and the cure of disease are…
    ChemistryNature
  14. 14
    Restaurant Report
    Words • 1500
    Pages • 6

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    Paper Type:1400 Word Essay Examples
    Cut pork into ½ in. squares and with the pork bones fry over low heat until brown and the meat is slightly dry. If pork is very fatty, pour off all but 4 or 5 tablespoons of the grease. Using a colander, strain tomatoes into an 8-quart saucepan and coarsely chop tomatoes. Combine tomatoes, tomato sauce, hot water, cooked pork, and bones in the same saucepan. Bring to a rapid boil and continue boiling for 20 minutes. Add spices, chopped…
    Restaurant ReviewSalt
  15. 15
    From Brine to Can: The Process of Salt Production
    Words • 469
    Pages • 2

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    Paper Type:450 Word Essay Examples
    Briefly describe salt production, from brine production to finished round cans. Salt is obtained by introducing water into salt caverns which in turn dissolves the salt deposits within the caverns, allowing the salt solution (brine) to be brought to the surface for further processing. The brine is boiled in order to remove most of the liquid, resulting in salt crystal deposits. The salt crystal deposits are then further dried to remove all residual moisture to produce the final product; salt.…
    IndustrySalt
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