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Plzzz make me understand the 1st law of thermodynamics

Posted by Neha Bhatt 7 years ago

CBSE > Class 11 > Chemistry

2 answers

Yogita Ingle 7 years ago

The First law of thermodynamics is same as law of conservation of energy.
According to law of energy conservation: - Energy can neither be created nor be destroyed, only transformed to other forms.
According to first law of thermodynamics:- The change in the internal energy of a closed system is equal to the amount of heat supplied to the system, minus the amount of work done by the system on its surroundings.
Examples:- Consider a ball falling from the roof of the building when at top of the building the ball has only potential energy and when it starts falling potential energy decreases and kinetic energy starts increasing. At the ground it has only kinetic energy.

Ankit Singh 7 years ago

1st law of thermodynamics is also called law of conservation of energy. According to this law energy may change from one form to other but total energy of system will remain constant .. Hope this answer is helpful to u ???

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