Energy Is The First Law Of Thermodynamics Essay

Energy Is The First Law Of Thermodynamics Essay

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Energy is defined as an exclusive driving force for all physical and chemical changes. Energy exists in many forms such as heat, mechanical work, light, sound, electric, and chemical energy. Energy can be transferred through heat flow, like when a pot of water is put on the stove and the water gets hotter. Something happened here and something changed, hence a driving force for a physical and chemical change. It is important to know that energy does not have mass of a definite shape and these characteristics make it hard to identify. When energy is absorbed temperature rises, therefore, when energy is lost it causes temperature to decrease. Energy also causes the release of electromagnetic radiation melting, vaporization, crystallization, chemical reactions, fire, wind, and storms. Therefore, it is found that energy causes material to change. To put it all together energy cannot be created or destroyed. It can only be changed from one type to another (3).

Relating to energy is the first law of thermodynamics. This law states that energy is always conserved and it cannot be created or destroyed. This validates that the energy of the universe is constant. This does not mean that energy can’t be transferred from one part of the universe to the other. Thermodynamics is the branch of physics that deals with the relationships between heat and other forms of energy. In particular, it describes how thermal energy is converted to and from other forms of energy and how it affects matter. To describe the relation of heat transfer and the first law of thermodynamics it is best to put in into real life context. First, it is vital to identify the system and the surroundings. If a swing is defined as a system then everything els...


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...eters. These measure heat energy released or absorbed during a reaction that occurs inside the caliometer. Bomb caliometer are used to measure heat of combustion of a particular reaction. Differential scanning caliometers heat flow into a sample is usually measured differentially. A popular caliometer used in biochemistry is called the isothermal titration caliometer. In this caliometer the heat of the reaction is used to follow a titration experiment. It is used in biochemistry because it t facilitates determination of substrate binding to enzymes. Other caliometers that are sometimes used are x-ray micocaliometer, and high-energy particle caliometer. These two caliometers are not as often used, but can still be included in the different types. It is apparent that there are many different types of caliometers and some are used more commonly than others (2).

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