Difference Between Heat and Temperature


As we know that both heat and temperature are the concepts of thermodynamics, that work together to let the energy flow from the hotter body to the cooler body. While the heat depends on the number of particles in an object, the temperature does not depend on a number of particles in an object because it is an average measurement.

Definition of Heat:

As we know, the heat of an object is the aggregate energy of all molecular movement inside the object. A form of energy that is transmitted from one object or source to another due to the difference in their temperature. It moves from a hotter object to the cooler one. Its measurement can be done in energy units, calorie, or joules.

Definition of Temperature:

Temperature is defined as the average kinetic energy of all molecules together, the average energy of all the particles in an object. As an average measurement, the temperature of a substance does not rely on its size and the types. so the temperature is identified how hot or cold an object is, in degrees. It also measures the speed of atoms and molecules of the substance.

Difference between heat and temperature:


  • Heat is nothing but the amount of energy in a body, while in temperature is something that measures the intensity of heat.
  • Heat is one form of energy, it is thermal energy. While in temperature is not an energy, it is the thermal state of a physical body.
  • Heat is represented by Q while in temperature is represented as a T.
  • A calorimeter is a device, which is used to measure the heat. On the other hand, the temperature can be measured by the thermometer.
  • Heat is not a property of the thermodynamic process, while the temperature is a property of the thermodynamic system.
  • Heat value must be in positive form, while in temperature value positive or negative.
  • The main features of heat are that it travels from a hotter region to a cooler region, while in temperature which rises when heated and falls when cooled.
  • Heat measures both kinetic and potential energy contained by molecules in an object, while in temperature measures the average kinetic energy of molecules in a substance.
  • The standard unit of measurement of heat is joules, while that of temperature is Kelvin, but also be measured in Celsius and Fahrenheit.
  • Heat processes of the ability to work, but the temperature is used exclusively to gauge the extent of heat, temperature is the ability to measure the degree of the total amount of heat.
  • Heat is exchangeable, it can flow from one body to another. Temperature is not exchangeable,  only heat can be exchange.
  • Heat is not a fundamental property of matter, while in temperature is a fundamental property of matter.
  • Heat is a path function, Temperature is a point function.
  • The heat flows from the hotter body to the colder body, Temperature increases when heated and decreases when cooled.
  • The heat flow between two bodies does not rely on the amount of heat present in the bodies, while in temperature is decides whether or not heat flow occur between two bodies.

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