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James/Cam U9 (Energy Basics (Law of Conservation of Energy: The law of…
James/Cam U9
Energy Basics
Law of Conservation of Energy: The law of conservation of energy is a physical law that states energy cannot be created or destroyed but may be changed from one form to another.
Energy: Energy is defined as the ability to do work or produce heat. Potential energy is energy due to composition or position. In contrast, Kinetic energy is the energy of motion.
Units of Energy: The units of energy include Joules, Calories, and Kilocalories. 1 joule is equal to 0.2390 calories.
Heat vs Temperature. Heat is defined as energy that is in the process of flowing from a warmer object to a cooler object. In contrast, temperature is the average KE of particles in the sample.
Specific Heat: The specific heat of any substance is the amount of heat required to raise one gram of that substance one degree Celsius. Some objects require more heat than others to raise their temperatures.
Endothermic vs Exothermic. An endothermic reaction is any process which requires or absorbs energy from its surroundings, usually in the form of heat. In contrast, an Exothermic reaction is a chemical reaction that releases energy through light or heat.
Heat
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Calorimetry: is the process of measuring the amount of heat released or absorbed during a chemical reaction. By knowing the change in heat, it can be determined whether or not a reaction is exothermic (releases heat) or endothermic (absorbs heat).
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Thermochemistry
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Thermochemistry is defined as a field of study of heat energy involved in chemical reactions and physical transformation. Thermochemistry coalesces the concepts of thermodynamics with the concept of energy in the form of chemical bonds.
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