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HEAT

HEAT. By: Paul Christopher M. Orzales. Kinetic Theory of Matter. Heat is a measure of the internal kinetic energy of the molecules and atoms making up the substance. Equation: KE ave = (3/2) kT. HEAT. Joule(J) = Unit of Heat (kcal) and (Btu) - used specifically for heat energy

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HEAT

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  1. HEAT By: Paul Christopher M. Orzales

  2. Kinetic Theory of Matter • Heat is a measure of the internal kinetic energy of the molecules and atoms making up the substance. Equation: KEave= (3/2)kT

  3. HEAT Joule(J) = Unit of Heat (kcal) and (Btu) - used specifically for heat energy 1 J = 2.39 x 10-4 kcal 1 kcal = 4185 J

  4. Quantity of Heat • Temperature indicates when heat will be transferred but does not the whole story of how much heat energy is stored in a substance. • Specific Heat – a property of a material that explains why some foods and liquids remain hotter longer than others.

  5. Specific heat and water • Water = 1 cal/g ˚C • When water is cold, it can absorb more heat as it warms up Table

  6. Thermal Equilibrium • Occurs when one or more substances reach a common temperature by exchanging heat. Equation: Heat lost = Heat gained Qlost = Qgained

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