Chemistry Essay Examples Page 54
We found 336 free papers on Chemistry
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Lab Report Acid Base Titration
Titration
Objectives To determine the concentration of acid using titration. Skills of titration techniques. Apparatus 250 volumetric flask 10mL measuring cylinder 25mL pipette 50mL burette 250mL beaker 150mL conical flask Retord stand White tile Stopwatch Pipette bulb Chemicals HCl solution 0. 1M NaOH solution H2SO4 solution Distilled water phenolphthalein Introduction An acid-base titration is the determination of the concentration…
Romantic elements in Gray’s “Elegy Written in Country Churchyard” Sample
Church
Elements
Thomas Gray is by and large and justly regarded as a transitional figure in eighteenth century poesy. supplying a span between the poetic esthesia of his ain coevals and the Romantic revolution of the hereafter. His work shows the relation between the poesy of the new age and that of the eighteenth century. Several facets…
Separation of Chlorophyll a, Chlorophyll B, and Beta Carotene by Paper Chromatography
Chromatography
Abstract Pigments extracted from different greens have different polarities and may be different colors. Mixed pigments can be separated using chromatography paper. Chromatography paper is able to separate mixed pigments due to their polarity and solubility. Pigments of chlorophyll a, chlorophyll b and beta carotene will be separated on chromatography paper because each has its…
Hydrochloric Acid and Marble Chips Experiment
Acid
Hypothesis: The higher the concentration of hydrochloric acid, the faster the reaction will take place because there will be more hydrochloric acid particles to collide with the marble chip particles therefore resulting in a quicker reaction. The lower the concentration, the weaker the reaction will be as there will be fewer particles so less chance…
Testing for Reducing sugars, non-reducing sugars, starch, lipids and proteins
Protein
Testing for reducing sugars, non-reducing sugars, starch, lipids and proteins in unknown substances: Our aim: was to find out which substances from our five samples have reducing sugars present to determine what they may be for example; they could be monosacchrides or disaccharides. This was carried out by using Benedict’s test. To find out which…
Great Impact on Our Environment
Money
Plastic
After thinking about all the things I do purchase daily, I feel it is best to make better decisions on how we should spend our money which should help us with our finances. There can be times we spend our money without thinking it clearly through and already having the money for something you want…
Experimental Synthesis of Aspirin and Melting Point Purity Analysis Donald Yeargin
Melting Point
Abstract The various methods available to synthesize aspirin lead to the need to examine and evaluate production efficiency and purity. The purpose of our experiment was to synthesize acetyl salicylic acid (aspirin) and then determine the relative purity of the synthesized sample by observing the melting point temperature range. The procedure performed in our experiment…
Synthesis of Acetyl Salicylic Acid (Aspirin)
Acid
Introduction The report details the production of Aspirin in a small laboratory, highlighting the esterification reaction between salicylic acid and acetic anhydride. This reaction replaces salicylic acid’s alcohol group with acetic anhydride to form a new compound called acetylsalicylic acid or Aspirin. The report provides further details about the procedure and experimental technique employed in…
Heavy Metals Pollute the Environment
Environment Pollution
Metals
Soil
Heavy metals (HM) are elements that are known to be dense, usually more than 5g/cm3. They can be classified into groups. The necessary elements that play important role in metabolism of organisms and cells at low concentrations. Examples are; Nickel, Copper and Zinc. These elements become toxic at high concentrations or high doses. The elements…
The Effect of Molecular Weight to the Diffusion Rate of Substances
Diffusion
The Effect of Molecular Weight to the Diffusion Rate of Substances[ 1 ] The consequence of molecular weight to the rate of diffusion of substances had been obtained through agarose-water gel experiment. Drops of the undermentioned dye samples were used as controlled variables: K permanganate, K bichromate and methylene blue. Each dye has a molecular…
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| description | Chemistry is the study of substances—that is, elements and compounds—while biology is the study of living things. ... Thus chemistry involves the study of the atomic composition and structural architecture of substances, as well as the varied interactions among substances that can lead to sudden, often violent reactions. |
| quotations | “Stevia does something funny to the chemistry of my mouth. There’s no fooling a taste bud, in my experience.” “Chemistry can be a good and bad thing.” -Adam Sandler. “A neutron walks into a bar and asks how much for a drink. |
| information | Conjugation: In chemistry, a conjugated system is a system of connected p orbitals with delocalized electronsdelocalized electronsIn chemistry, delocalized electrons are electrons in a molecule, ion or solid metal that are not associated with a single atom or a covalent bond. … In quantum chemistry, this refers to molecular orbital electrons that have extended over several adjacent atoms. Chemistry journals: Journal of the American Chemical Society, Journal of Materials Chemistry A, ChemComm, Chemistry—A European Journal, Kinetic energy: Kinetic energy is the energy associated with objects in motion. Potential energy is the type of energy associated with an object’s potential to do work. Chemical energy is the type of energy released from the breakdown of chemical bonds and can be harnessed for metabolic processes., Chemistry Books: The Disappearing Spoon: And Other True Tales of Madness, Love, and the History of the World from the Periodic Table of the Elements, The Elements: A Visual Exploration of Every Known Atom in the Universe, CRC Handbook of Chemistry and Physics, Chemistry for Dummies, Molecules: The Elements and the Architecture of Everything, Organic Chemistry as a Second Language, Napoleon’s Buttons, Periodic Tales, Organic Chemistry I For Dummies, Organic Chemistry I Workbook for Dummies, Advanced Organic Chemistry: Part A: Structure and Mechanisms, Organic Chemistry, Introduction to general, organic, and biological chemistry, The Essential Laboratory Manual, An Introduction to Medicinal Chemistry, Organic Chemistry as a Second Language, The Double Helix: A Personal Account of the Discovery of the Structure of DNA |
