PPT-Phase change and latent heat

C ontents Phases of matter Changing phase Latent heat Graphs of phase change Whiteboard Graph whiteboards 4 Phases of Matter TOC Solid Crystallinenon crystalline Liquid Greased marbles. D. efine thermal capacity.. Explain the significance of high and low specific capacities.. HEAT CAPACITY. The . amount of thermal energy needed to raise . the temperature of . substance . by 1. 0. C. . Physics 12 . Objectives. Define . specific heat capacity.. Solve problems involving specific heat capacities.. Explain the difference between solid, liquid, and gaseous phases.. Explain in terms of molecular behavior why temperature does not change during a phase change.. These areas have extra notes to help you.. Make notes as we go along, always including these post-its. Notes. Objectives. Objectives. BRONZE. To define ‘latent heat’. SILVER. To be able to measure latent heat. Introduction to Heat. Heat is a form of energy.. A large amount of energy ends up as heat.. Example: in a car some of the chemical energy stored in petrol is turned into heat energy. . Heat can have a significant effect on solids, liquids and gases (such as expansion).. Section 9.1: Temperature and Thermal Equilibrium. Defining Temperature. Temperature: a measure of the average kinetic energy of the particles in a substance. Adding or removing energy usually changes temperature. The material: conductor or insulator?. Area. Ex: a bigger window vs. a smaller one.. Thickness. Ex: heat escapes a thinner . styrofoam. cup than a thicker one.. Heat and State of Matter. Does the absorption or release of heat always cause a temp change? . Heat. Heat. is energy that flows from a higher-temperature object to a lower-temperature object because of the difference in temperatures.. SI Unit of Heat:. joule (J).. SI unit for heat is the joule, J. Define the term ‘internal energy’.. Explain the differences in the forces of attraction found between particles of a gas compared to particles of a solid.. Explain what is meant by ‘latent heat’. Qnet. = (. Downwelling. Shortwave + Upwelling Shortwave (albedo)) + (. Downwelling. . Longwave – Upwelling Longwave). Substituting the GEOS-5 expressions for each of these fields gives:. Sfc. . Defining Temperature. Temperature: a measure of the average kinetic energy of the particles in a substance. Adding or removing energy usually changes temperature. Internal Energy: energies associated with atomic motion. Clausius. – . Clapeyron. equation, Temperature dependence of entropy, Statistical interpretation of entropy, Consequences of third law, Nernst heat theorem, Equilibrium constant, Van-Hoff equation, Concept of fugacity, activity and mole fraction. Study guide is posted in the homework of the webpage.. Exam 1 is on . Friday, February 3. th. .. We often speak of . heat . as though it were a . material . that flows from one object to another; it is not.. Nature of science:. Evidence through experimentation: Scientists from the 17th and 18th centuries were working without the knowledge of atomic structure and sometimes developed theories that were later found to be incorrect, such as phlogiston and perpetual motion capabilities. Our current understanding relies on statistical mechanics providing a basis for our use and understanding of energy transfer in science.. Dr.N.Shanmugam. Assistant Professor. Department of Physics. DGGA College for women. Mayiladuthurai. Phase Transformation.  . Phase Transformation. At . low temperatures. , most of the substances are in the .