is by eating chocolates. To confirm this assumption‚ the experimenter‚ Victor Seo has developed an experiment to prove the hypothesis: “people who consume lots of chocolate will produce more acne than people eat less chocolate. 400 students of teenagers with grades ranging from 9 to 11 will be examined divided into four groups each consuming 1 bar‚ 3 bars‚ 6 bars‚ or 10 bars daily. This experiment will remain over a time period of a month. Meals will be served in equal amounts and the amounts of
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EXPERIMENT 201: WORK‚ ENERGY AND POWER John Michael A. Ramos‚ Phy11l/A5 Abstract The essential conditions to be satisfied for work to be done are: Some force must act on the object. The point of application of force must move in the direction of force. W = F x s. SI unit of work is joule. Energy is the capacity to do work. The two types of mechanical energy are kinetic energy and potential energy. Kinetic energy is the energy possessed by an object by virtue of its motion. Potential energy is
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Experiment Plan By: Ashley Project Question: What size of bouncy ball bounces the highest‚ small‚ medium‚ or large? * I predict the following will happen (my hypothesis): I predict that the smallest ball will bounce the highest since it is the lightest. | * Independent Variable: I will be changing the ball size. * Dependent Variable: The height of the bounce. * Controlled Variable: The height that I will drop the balls at. | The materials and amounts of each that is
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Von Leeuwenhoek * Father microbiology & microscopy * Discovered microorganisms (animalcules) * Disproved microorganisms were heaven sent * Put clean bowl out during rainstorm & no microorganism * Let sit * Days later microorganisms formed from air * Ferdinand Cohn * Discovered endospores (enable some bacteria to survive adverse environmental conditions) * Why growth occurred in experiments that disproved/proved SG * Louis
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English 10a 6 March 2012 Tuskegee Experiments This is possibly one of the most inhumane things to ever happen in the 20th century in the Untied States. The experiments that took place were the root of medical misconduct and blatant disregard for human rights that took place in the name of science. The ghastly medical expirements that took place between 1932 and 1972 was merely an observation of the different stages of syphilis. The men in these experiments for the most part were illiterate
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rate of use of carbon dioxide by a plant in the process of photosynthesis. Problem What is the relationship between light intensity and the rate of photosynthesis? Pre-Lab Discussion Read the entire investigation. Then‚ work with a partner to answer the following questions. 1. What are the variables in this experiment? Identify the manipulated and responding variables and two controlled variables. The manipulated variable is light intensity. The responding variable is pH. Controlled variables
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Experiment 9 Thin Layer Chromatography Experiment: 9 Title: Thin Layer Chromatography Introduction: Chemical analysis is conducted on specific analytes (specific substance of interest in a mixture)‚ however it is often found that these analytes must be separated for the chemical analysis to conduct their analysis. Chromatography is a set up of laboratory a technique that is used to separate a chemical mixture. This technique is very useful as it allows us to follow the course of
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Introduction Identification and classification of bacteria is important to make easier manipulation on the bacteria for various purposes such as for medical‚ research‚ developmental‚ and biotechnicalfieldsThe cell wall is the basis for classification of bacteria according to the Gram stain. Accordingto the chemical make up of bacterial cell wall‚ a staining procedure‚ Gram stain‚ helps usclassify bacteria into two subgroups‚ The cell wall can stain either positive or negative‚depending on its chemistry
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Physical Chemistry CHM2330 Experiment F- Raoult ’s Law Experiment By: Sanah Assaad Student Number: 5267864 Partner: Jihad Arafa T.A: Didier University of Ottawa March 25‚ 2010 Objective: The purpose of this experiment is to study the total vapour pressure of ideal or non-ideal mixtures of two volatile liquids as a function of chemical composition. Introduction: For ideal mixtures of volatile liquids the vapour pressure of any given mixture may be obtained by applying Raoult
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brand of glue * The type of surface Dependent Variable: * The strength of the glue Controlled Variables: * Same amount of glue (one swipe) * Same amount of time to dry * Same person conducting experiment * Same time of day * Same amount of experiments * Same Net Weight (21g) * Same brand of surfaces * Same person timing (Jet) * Same time and place of investigation * Same length of surface Plan Aim: To see which brands of glues stick the
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