Tensile Strength Report | Materials in Practice CP4088/CP8011 | By Clinton Chang | Synopsis This experiment is to find out the tensile strength of different plastic materials. The four plastic materials used are General Purpose Polystyrene (GPPS)‚ High Impact Polystyrene (HIPS)‚ High Density Polyethylene (HDPE) and Polypropylene (PP). By using three samples from each plastic material type‚ we are able to obtain the mean tensile strength‚ mean tensile modulus and mean yield strength of each
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A-B-A-B-A-B-‚ where A and B are different subunits. These sub-units are typically connected by covalent chemical bonds. Polymerization is the process of combining many small molecules known as monomers into a covalently bonded chain or network. Each monomer is incorporated into the polymer is known as a repeat unit or monomer residue. The physical properties of a polymer are strongly dependent on the size or length of the polymer chain. Some of the polymers and their precursors are via radical mechanism or
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enzyme is said to be destroyed. Thus‚ the enzyme denatures at high temperature and loses its catalytic activity permanently. Hydrochloric acid‚ HCL in this experiment is used to hydrolyze the complex sugar which present in solution B into monomers or simpler sugars. At 37˚C‚ salivary amylase present in saliva reacts actively to hydrolyze the complex sugar in solution B as 37˚C is its optimum temperature. Therefore‚ it gives positive result for the Benedict’s test‚ which is formed brick-red
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Concept 5.5: Nucleic acids store‚ transmit‚ and help express hereditary information a) The amino acid sequence of a polypeptide is programmed by a unit of inheritance called a ________________. b) Genes consist of ___________‚ a nucleic acid made of monomers called ________________. © 2015 Pearson Education Ltd The Roles of Nucleic Acids a) There are two types of nucleic acids a)_________________________ (DNA) b)_________________________ (RNA) b) DNA provides directions for its own _____________
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Did different conditions affect the Enzyme’s Efficiency? The hypothesis was “the more the imposed condition affects the mobility of the Enzyme‚ the fewer toothpicks will be broken”. This hypothesis proved true. This experiment manifested through multiple trials that the condition the enzyme had to endure definitely affected the Enzyme’s Efficiency. During this modeling experiment‚ it was observed that that the efficiency of the Enzyme over time created a line like that of a radical function
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Unit One Continued Biology is Life and the Living Characterstics of living things Must have Complex and Organized structure based on element carbon Flower (complex and organized) Reproduction and show gene controlled by heredity Camel reproduces and heredity is the traits based on the genes of the DNA Instructions on how to create YOU Crystal reproduces but has no Genes and no control Living things show growth and development Egg cell with sperm to embryo to child 23+23 for DNA Energy
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Mechanics of the Quic-Vac Mixing Bowl System The Quic-Vac Mixing Bowl system moves a mixing paddle in a constant changing path to thoroughly mix together the monomer (liquid portion) and the polymer (powder portion) components of the bone cement. It efficiently mixes bone cement in a closed vacuum set up to reduce harmful monomer fumes being exhausted. This mixing system is used under compressed air to reduce porosity of the cement. The PALCACOS cement is compatible with this system; therefore
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cytosine equals that if guanine in the DNA of a variety of organisms. So being opposites‚ they attract. A to T and C to G. 7. Show how dehydration synthesis (condensation reaction) bonds occur at 2‚3 and 5 prime carbons of sugar. Monomers join together to form polymers by removing water to form covalent bonds. It takes OH from sugar on the 5th carbon and takes H from phosphate group to
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The Lawn Mower – Notes - Before the invention of the lawn mower‚ grass was maintained through animals grazing the area. - Birds such as chickens and geese were either able to roam freely or were kept in movable pens while sheep and cattle cleared the larger areas of grass. - A scythe was used to cut off plants that the animals wouldn’t eat - The lawn mower was invented in 1830 by an English Engineer named Edwin Beard Budding - Obtaining his idea from observing a machine in a local cloth mill
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Environmental Chemistry It often matters how much given atoms combine‚ in what arrangement‚ with what others‚ what impulse they receive‚ and what impart. The same ones make up earth‚ sky‚ sea‚ and streams; the same as the sun‚ the animals‚ grains and trees‚ but mingling and moving in every different ways. - Lucretius (95-52 B.C.) in The Nature of Things I. Physical Chemistry Why is Physical Chemistry important in the study of Environmental Engineering? • Applied physical chemistry procedures
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