heat and temperature
TRANSCRIPT
Temperature• It is the measure of average kinetic energy
of the particles in a body.Kinetic Molecular Theory of Matter
“All particles of matter are in constant motion.”
• Temperature is fundamental quantity of any matter.
• Units such as Fahrenheit, Celsius/ Centigrade and Kelvin are used to quantify temperature.
Fahrenheit• It was formulated by
Daniel Fahrenheit based on his experiment using a mercuric thermometer and ice-salt solution.
Kelvin• William Thomson,
also known as Lord Kelvin devised the absolute zero temperature scale.
K = 273.15 °C
Internal Energy• It may seem that the glass-water
system has zero energy. But in the microscopic level, the molecules are in constant motion(kinetic energy) and attractive forces between molecules(potential energy).
• The combination of motion an attractive energy of the molecules gives the internal energy of an object.
Thermal Equilibrium• It is a condition when
bodies in a system cease to transfer heat and is manifested by a single temperature.
Heat• It is a form of energy not
inherent in a body. Its presence depends on the difference in temperatures of two bodies in contact.
• The transfer of heat is a natural process and will only stop if both bodies possess the same temperature.
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