TMA03 Covering Block 3 Question 1 (a) An impactor mass of 45 kg is used to represent the weight of child reasonably regarded to be involved in an accident with glass or plastics. (b) The BS standards gives the manufacturers a clear set of standards that their products need to achieve to be safe and fit for the purpose that they have been designed for. It also gives the purchaser the expectation that the item has reached the standards set down by the BSI and will be a safe
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The majority of my results produced the expected bell curve on my graph. However‚ I believe due to human error the results were incorrect between temperatures of 60Ëšc and 80Ëšc causing this area of my graph not to follow the pattern of my initial prediction. I have also noticed that the highest rate is at a slightly higher temperature than I expected‚ though this may be due to the large difference in temperature between each sample. As the temperature was increases the molecules were
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Comparing the enthalpy changes of combustion of different alcohols Aim In this experiment I will investigate the enthalpy changes of combustion. In particular I will be investigating the enthalpy change of combustion for different alcohols. I hope to investigate some of the homologous series alcohols‚ as well as a few structural isomers of these alcohols. Background & theory Enthalpy cannot be measured. What we can actually measure is the enthalpy change from the reactants to the products.
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Whether it be in the form of a ribbon‚ medal‚ or trophy‚ participation is commonly rewarded within organized sports teams as a way to give children incentive to try sports and engage in physical activities. While these trophies are intended to reward children for their contribution‚ the praise is undeserved‚ and will potentially create more harm than good in the future. A participation trophy is a tangible reminder that a child showed up to a game or tournament‚ but it has no fundamental value besides
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Newton’s Law of Cooling The main purpose of this experiment was to find the positive constant “K” for different liquids in the Newton’s Law of Cooling equation‚ in order to determine when it was safe to store food products in commercial restaurant after cooking. The high risk temperature for bacteria growth is between 5 and 60 degrees. However putting hot food into your fridge before this point can cause food poisoning especially in deep containers‚ which is why it is vital that food companies
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Module No. 6 Energy Relationships in Chemical Reactions The Nature of Energy and Types of Energy Energy – is the capacity to do work or to transfer heats. Forms of Energy 1. Kinetic energy 2. Radiant energy 3. Thermal energy 4. Chemical energy 5. Potential energy Energy Changes in Chemical Reactions Heat – is the transfer of thermal energy between two bodies that are at different temperature. Thermochemistry – is the study of heat
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First Law of Thermodynamics The first law of thermodynamics states that the energy cannot be created nor destroyed it can only be changed from one form to another. Another name for this law is the law of conservation of energy. This means that the total energy of a system plus its surroundings is constant and does not change. Energy can‚ however‚ be transferred in or out of the system and to or from the surroundings through work or heat. Conservation of Energy Energy may be defined as the
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Aim: The aim of my experiment is to find out the rate of reaction between Hydrochloric acid (HCL) and Magnesium (Mg) in different temperatures. The products that will be formed are Magnesium Chloride (MgCl2) and Hydrogen (H2). Prediction: I predict that as the temperature increases the rate of reaction also increases. To further explore the fact I further predict that the rate of reaction will double for every 10° C rise in temperature. I further predict as the temperature rises by 10° C the rate
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SCH4U0 The Energy of Physical‚ Chemical‚ & Nuclear Processes The study of energy and energy transfer is known as thermodynamics. When this study of energy transfer is specific to energy involved in chemical reactions it is called thermochemistry. Studying Energy Changes The Law of Conservation of Energy states that the total energy of the universe is constant. (Energy can neither be created nor destroyed. [pic] Energy can be transferred from one substance to another‚ and it can also
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The thermohaline current is the most important current system on this planet because of its important driving forces of the planet. Why is it named Thermohaline? The thermohaline has this name because it consists of general oceanic circulation controlled by the differences in temperature and salinity. Salinity refers to the total amount of dissolved salts in grams that are present in one kilogram of sea water‚ for example sodium and chloride. ‘Thermo’ comes from the use of heat in the process
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