molecule of water A chemist’s view of the world is not as narrow as one might think! Yes‚ we start with the atom‚ and then go on to the rules governing the kinds of structural units that can be made from them. We are taught early on to predict the properties of bulk matter from these geometric arrangements. And then we come to H2O‚ and are shocked to find that many of these predictions are way off‚ and that water (and by implication‚ life itself) should not even exist on our planet! But we soon
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The Charge/Mass (e/m) Ratio of the Electron PHYS 0212: Introduction to Laboratory Physics Fall 2012 Abstract The experiment conducted demonstrated correlation between the charge and mass of an electron and the behavior of magnetic fields. The lab was divided into four parts. The first three parts were conducted with a compass that was used to locate the magnetic field lines around a bar magnet‚ a solenoid and then a pair of Helmholtz coils. As a result of these trials‚ our observations found
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and ideas about these issues to life through dramatic performances and the use of a number of various techniques. No Sugar‚ a revisionist text written by Jack Davis in 1985‚ is one of these stage dramas. Jack Davis brings issues and even expresses his own ideas about issues such as the injustices of Aboriginal treatment during the 1930’s‚ to life in No Sugar very well because No Sugar is a revisionist text‚ and therefore offers a new perspective
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Abstract This lab’s purpose was to test the patterns of percolation in various places. This lab tested how soil would absorb water based on different places. Distance from a group of trees‚ distance from a swamp‚ and different types of soil were tested. From the results collected‚ you can not prove‚ but you can infer that the ability to absorb increases as you go farther away from a swamp‚ and a group of trees. The ability to absorb also increases based on how much silt is in soil. Introduction
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molecular level – Tutoring for biology Saturated fat vs. unsaturated fat Saturated fat has a lot of single carbon bonds. This makes them much straighter in shape and therefore easier to stack together. It’s called “saturated” fat because the molecule has the maximum amount of hydrogen atoms attached to it as possible. Unsaturated fat has double carbon bonds. Each double carbon bond means two less hydrogen atoms on the molecule. Unsaturated fat also is kinked at each double bond‚ disrupting the
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growing leaves. SInce no sunlight is present underground‚ growing leaves would be pointless and would stunt the very essential growth of the plant as well as wasting very precious resources. Therefore hormones in the plant signal the formation of proteins that inhibit production of chlorophyll and promotes extensive growth‚ ensuring that the plant will reach sunlight as soon as possible. This process is called etiolation. Once the plants reach the sunlight‚ they start the reverse process‚ called deetiolation
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simple mechanisms used to convert rotary motion into oscillating linear motion and vice-versa. The first of these is the slider-crank - a mechanism widely used in engines to convert the linear thrust of the pistons into useful rotary motion. In this lab we will measure the acceleration of the piston of a lawn mower engine at various speeds. The results exemplify a simple relation between speed and acceleration for kinematically restricted motions‚ which will discover. An adjustable slider-crank apparatus
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Coulomb’s Law Purpose: The purpose of this lab was to demonstrate that the force between two stationary charges is directly proportional to the product of the charges and inversely to the square of the distance between them. Coulomb’s law tells us that the force between two charges depends (1) linearly on the strength of each charge‚ and (2) inversely on the square of the distance between them. Mathematically we would write this as . Procedures Part1 Begin by removing the right side
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mitochondria are studied to identify their proteomes and how development affects the proteome (Labbe et al.‚ 2008). Study of isolated mitochondria has great application in the pharmaceutical industry through the discovery that some mitochondrial proteins stimulate apoptosis in the cells (Wang‚ 2001). This research has aided in finding cure for cancer and Parkinson’s disease among many other diseases (Labbe et al.‚ 2008). Also‚ many drugs produced contain drug classes that can inhibit the function
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This lab has introduced the use of daphnia‚ pill bugs‚ amoeba and Uglena. We the AP Biology students were first introduced to the test subjects to test his or her capability of handling living organisms for upcoming science experiments. The AP Biology students were asked to create original experiments for all test subjects testing reactions to gravity‚ light intensity and reaction to food. Daphnia‚ or Daphnia magna‚ are microscopic organisms in which the students created an original lab to test
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