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Specific heat capacity is defined as the "amount of heat needed to increase the temperature of one gram of a substance by one degree Celsius" (Hayduk, 2015). Specific heat capacity has units of J/g0C. Specific heat capacity is unique to each substance. By identifying this value for a metal, the identity of the substance should be fairly clear.
In this experiment, you will determine the specific heat capacities of two different unknown metals by observing the transfer of heat from a heated piece of metal to a sample of water at room temperature.
Specific Heat of Solids Object: To determine the specific heat of a given solid specimen. Theory: Thermal energy is an internal energy that consists of the kinetic and potential energies associated with the random motions of the atoms, molecules, and other microscopic bodies within an object.
Experiment: H1 Determination of the specific heat capacity of an object by the method of cooling 1. Pre-lab reading Ref. “University Physics” (12 Ed). Young and Freedman. Pp 571, 582 ff The concept of temperature is rooted in qualitative ideas of "hot" and "cold" based on our sense of touch.
The specific heat does not depend on the size or shape of an object, but only on the material from which it is made. Water has a large specific heat of 1 calorie per gram per degree Celsius or 4,186 joules per kilogram degree Celsius. Ice floats because the volume of water increases when it freezes.
The specific heat is an intensive property that describes how much heat must be added to a particular substance to raise its temperature. The heat capacity is an extensive property that describes how much heat energy it takes to raise the temperature of a given system.
Lesson 6a: Specific heat • Phonons contribute significantly to thermal properties • Specific heat is the energy required to increase the temperature: 𝑇 o Temperature is the “average energy” of a systems’ Degrees of Freedom o More degrees of freedom means more energy required to increase temperature
