Chapter 16 Energy and Chemical Change. Nature of energy. Energy – the ability to do work or produce heat Kinetic energy – energy of motion Potential energy – stored energy Chemical potential energy – stored energy because of composition. Measuring heat.By xenon
Chapter 16 Energy and Chemical Change. Nature of energy. Energy – the ability to do work or produce heat Kinetic energy – energy of motion Potential energy – stored energy Chemical potential energy – stored energy because of composition. Measuring heat.By stephanie-snider
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HEAT HEAT HEAT. True or False. Definitions. Conduction. Convection. Scales in Measurement. Radiation. Directions. Directions. Choose a subject – True/False, Conduction, Insulator, Definitions, Convection, Radiation Click on each question, and then carefully answer each.
Heat Transfer/Heat Exchanger. How is the heat transfer? Mechanism of Convection Applications . Mean fluid Velocity and Boundary and their effect on the rate of heat transfer. Fundamental equation of heat transfer Logarithmic-mean temperature difference. Heat transfer Coefficients.
Heat and heat transfer. Solids. Liquids. Gasses. AND PLASMA. Phases of Matter. There are currently 4 Phases of matter. They are:. Solids. Tend to be the most dense. Rigid, Crystalline Holds its shape Little translational motion of molecules Rock, Ice, steel Density
HEAT AND HEAT TRANSFER. What is the difference between temperature and heat?. Temperature is a measure of the average kinetic energy of atoms. Thermometersare used to measure temperature.
T sys < T surr. surroundings. system. q > 0 (an endothermic process). T sys > T surr. surroundings. system. q < 0 (an exothermic process). Heat and Heat Capacity
Heat and Heat Technology. Section 1 Temperature. Essential Questions. Describe how temperature relates to kinetic energy. Compare temperatures on different temperature scales. Give examples of thermal expansion. What is Temperature?. Temperature is a measure of kinetic energy.
Heat and Heat Transfer. Scales of Measurement. Celsius scale – based on where water freezes (0 C) and where water boils (100 C) Kelvin scale – based on the movement of particles. Absolute Zero. At 0 K, all particle movement has ceased It is impossible to have a temperature lower than 0 K
HEAT & HEAT TRANSFER. Recall: heat is energy transferred from one object to another Energy in transit Once thought that objects contained “heat fluid” – the caloric Exp showed heat could be continuously produced as long as work was done. Heat – Cont.
Heat and Specific Heat. Heat can be thought of as a flow of energy due to a difference in temperatures. Heat always flows from a region of higher temperature to region of lower temperature. The joule (J) is the SI unit of energy (heat).