INTRODUCTION The purpose of this project paper is to highlight the chemistry and science of the very curious material: Kevlar®. Our aim is to create a very informative piece of writing that can be of reference to our project subject‚ when in need. Upon taking up this project we conducted some very superficial research initially. Our research led us to believe that Kevlar® is a rather well known material that has been used in bullet proof vests for the last couple of decades. In addition to
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7 properties of Life |Description/Examples | | |Order |All living things exhibit complex but ordered organization; structure of a pinecone | |Regulation |The environment outside of the organism may change drastically‚ but the organism can adjust its internal | | |environment keeping it within appropriate limits; temperature (shivering and sweating) | |Growth & Development |Information carried
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energy can generate spontaneously RNA polymers first molecules to store information and reproduce: * RNA: ribonucleic acid: polymer made up of a number of identical subunits—(nucleotide monomers). They are polymers that can: * Store information in the sequence order of their different nucleotide monomers * Possess a wide range of catalytic activities capable of providing metabolic function * Errors and mutations occur during RNA copying leads to changes in catalytic functions: can be
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HEMOSTASIS Hemostasis: drives from the Greek meaning “The stoppage of blood flow”. a process which causes bleeding to stop‚ meaning to keep blood within a damaged blood vessel. It is the first stage of wound healing. Hemostasis can be divided into two stages: Primary and Secondary. 1- Primary hemostasis includes the platelet and vascular response to vessel injury. 2- Secondary hemostasis includes the coagulation factors response to such injury. Together‚ platelets‚ vessels‚ and coagulation
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Title: Investigation of action of saliva and hydrochloric acid in two carbohydrate solutions. Objective: To determine the action of amylase and hydrochloric acid in two carbohydrates solutions Apparatus and equipments: 1. Boiling tube 2. Metal test tube racks 3. Beaker 4. Graduated plastic dropper 5. Water bath‚ ~37ᵒC 6. Water bath‚ ~95ᵒC Materials: 1. Carbohydrate solution A 2. Carbohydrate solution B 3. Benedict’s solution 4. 3M Hydrochloric acid 5. 3M Sodium hydroxide Procedures: 1. Two
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to the lungs because as the food is swallowed‚ a flap of connective tissue closes over the opening of the trachea to prevent food from clogging these airways. 16. During digestion‚ enzymes such as amylase break chemical bonds between the sugar monomers in starches. Digestive enzymes also break down foods and make the nutrients available to the body. 17. Mechanical digestion includes the muscles of the stomach contracting to mix stomach fluids and food which produces a mixture known as chyme. Chemical
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of synthetic or semisynthetic organic amorphous solid materials used in the manufacture of industrial products. Plastics are typically polymers of high molecular mass‚ and may contain other substances to improve performance and/or reduce costs. Monomers of Plastic are either natural or synthetic organic compounds. The word is derived from the Greek πλαστικός (plastikos) meaning fit for molding‚ and πλαστός (plastos) meaning molded. It refers to their malleability‚ or plasticity during manufacture
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Serendipity – Accidental Discoveries in Science ABSTRACT Serendipity means the faculty of making fortunate and unexpected discoveries by accidents. Penicillin‚ X-ray‚ Viagra‚ Teflon are common examples known as accidental discoveries in science. The stories of these discoveries are interesting and meaningful. X-ray for medical diagnosis and treatment‚ miracle drug penicillin‚ Viagra for treatment of erectile dysfunction‚ Teflon for frying pans‚ all of these discoveries make our life wonderful
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Organic Chemistry Basic Ideas: Carbon chains: Straight chains and branched chains‚ Numbering of chains and branches. Carbon Rings: Cyclic Molecules‚ Aromatic Compounds Types of Organic reactions: Combustion Addition Substitution Condensation Oxidation What is organic chemistry? Carbon compounds. Methane CH4 Hexane C6 H14 Ethane C2H 6 Heptane C7 H16 Propane C3H 8 Octane C8 H18 Butane C4H10 Nonane C9H20 Pentane C 5 H12 Decane C1 0 H22 Alkanes: Saturated Hydrocarbons
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Protein Essay- Erin Keegan What are proteins? A polypeptide is a chain of monomers joined up to make a polymer. Proteins are organic polypeptides made up of a chain of amino acid residues- they’re residues because they lose a water molecule. The amino acids (monomers) join up by forming peptide bonds. When two amino acids join together‚ they become a dipeptide. This happens when the carboxyl group of an amino acid and the amino group of another amino acid link up through a condensation reaction (which
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