I. Introduction Pressure is the application of force to a surface ‚ and the concentration of that force in a given area . A finger can be pressed against a wall without making any lasting impression ; however ‚ the same finger pushing a Thumbtack can easily damage the wall ‚ even though the force applied is the same ‚ because the point concentrates that force into a smaller area. Volume is the quantity of three-dimensional space occupied
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Experiment 1: Basic Laboratory Techniques Briana S. Golar Laboratory Partners: Dayreal Brown Valerie Marcellus Andrew Thompson January 16‚ 2013 Conclusion Introduction: The intent of the experiment is to sucessfully understand that chemistry is an experimental science which is dependent upon certain observation and the use of good laboratory techniques. The experimenter should become familiar with basic operations necessary
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PHYSICS IGCSE 2012 EXAM REVISION NOTES By Samuel Lees and Adrian Guillot 1. General physics 1.1 length and time 1.2 Speed‚ velocity and acceleration 1.3 Mass and weight 1.4 Density 1.5 Forces a. Effects of forces b. Turning effect c. Conditions for equilibrium d. Centre of mass e. Scalars and vectors 1.6 Energy work power a. Energy b. Energy resources c. Work d. Power 1.7 Pressure 2. Thermal physics 2.1 a. States of matter b. Molecular model c. Evaporation d. Pressure changes 2.2 Thermal properties
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Chemistry Module Six: Thermochemistry and rate Study sheet for the test G.01: Thermo-chemistry I. Temperature and Thermal Energy Temperature is a measure of the average kinetic energy of the particles in a sample of matter. The greater the avg. kinetic energy of the particles in a sample of matter‚ the higher the temperature of that matter. Some temperature scales are Fahrenheit‚ Celsius and Kelvin. Thermal energy is the measure of the total kinetic energy in a sample. And Temperature
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ersStudent name: ________________________________ Student ID Number: ________________________________ Length: 1.5 hours Instructor: Sandra Warren Instructions: Please use pen. Calculators allowed. Part A: (3 marks each) Q. 1 | Q.2 | Q.3 | Q.4 | Q.5 | Q.6 | Part B: (10 marks each) Q.1 | Q.2 | Q.3 | Q4. | Total: / 52 marks Part A: Short Answer. Only answer 4 of the 6 questions. (3 marks each) A1. Under standard state conditions‚ predict which has
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RESPIRATION * The release of energy from food * All living cells need energy to carry out M R S G R E N‚ contraction of muscles‚ build up of larger molecules (e.g. proteins)‚ maintains steady body temperature (homeostasis) * Aerobic: * needs oxygen * only occurs when a certain amount of oxygen is available * C6H12O6 + 6O2 6CO2 + 6H2O + Energy * releases large amount of energy (2900 KJ) * Anaerobic: * without oxygen * [glucose lactic acid]
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It is better to prevent waste than to treat or clean up waste after it has been created. Energy requirements of chemical processes should be recognized for their environmental and economic impacts and should be minimized. If possible‚ synthetic methods should be conducted at ambient temperature and pressure. Chemist Vilas Pol came up with an environmentally green method that breaks down plastics and transforms them into a highly usable substance for society. Chemist Vilas Pol inserted plastic bags
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PSC 41- Specific Heat Capacity and Latent Heat Constants: Specific heat capacity ofwater=4180 J Kg-1 K-1 Specific heat capacity of ice=2050 J Kg-1 K-1 Specific heat capacity of copper= 386 J Kg-1 K-1 Specific heat capacity of aluminum=900 J Kg-1 K-1 Latent heat of vaporization of water =2.26x106 J Kg-1 Latent heat of fusion of water = 3.34x105 J Kg-1 Density of water =1000 Kg m-3 Conversion : 1L ≡ 103 g for water 1) A 12.5 g sample of an unknown metal‚ heated to 99.0
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Physical vapor deposition PHYSICAL METHODS A physical deposition process consists of three steps: 1. Emission of the particles from a source 2. Their transport to the substrate 3. The condensation on the substrate Physical vapor deposition a process by which a thin film of material is deposited on a substrate according to the following sequence of steps: 1) the material to be deposited is converted into vapor by physical means; 2) the vapor is transported across a region of low pressure
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Maria Reyes iLab‚ Week #4 CHARLES’ LAW Introduction The purpose of this lab was to determine the effect of temperature on the volume of gas when the pressure is consistent and to verify Charles’ Law. The data from the experiment reveals that as temperature increases‚ so does volume. This also indicates that as temperature decreases‚ the volume decreases as well. Procedure 1) Select a 60 mL Syringe Sealed from the Gas Syringe item under the Equipment menu. Set the volume to 20 mL in the Initial
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