[Answer] first law of thermodynamics?

Answer: ice melting and boiling soup

Most relevant text from all around the web:

first law of thermodynamics? First law of thermodynamics - Simple English Wikipedia the ... What is the First Law of Thermodynamics? - wiseGEEK First law of thermodynamics - Wikipedia Laws of thermodynamics - Wikipedia The first law of thermodynamics is a version of the law of conservation of energy adapted for thermodynamic processes distinguishing two kinds of transfer of energy as heat and as thermodynamic work and relating them to a function of a body's state called Internal energy. The law of conservation of energy states that the total energy of an isolated system is constant; energy can be transformed from one form to another but can be neither created nor destroyed. For a thermodynamic process without transfer of matter the first law is often formulated The law of conservation of energy states that the total energy of an isolated system is constant; energy can be transformed from one form to another but can be neither created nor destroyed. For a thermodynamic process without transfer of matter the first law is often formulated ${\displaystyle \Delta U=Q-W}$ where ΔU denotes the change in the internal energy of a closed system Q denotes the quantity of energy supplied to the system as heat and W denotes the amount of thermodynamic work done by the system on its surroundings. An equivalent statement is that perpetual motion machines of the first kind are impossible. For processes that include transfer of matter a further statement is needed: 'With due account of the respective reference states of the systems when two systems which may be of different chemical compositions initially separated only by an impermeable wall and otherwise isolated are combined into a new system by the thermodynamic operation of removal of the wall then ${\displaystyle U_{0}=U_{1}+U_{2}}$ where U0 denotes the internal energy of the combined system and U1 and U2 denote the internal ener… Read more on Wikipedia The first law of thermodynamics applies...

Disclaimer: 

Our tool is still learning and trying its best to find the correct answer to your question. Now its your turn, "The more we share The more we have". Comment any other details to improve the description, we will update answer while you visit us next time...Kindly check our comments section, Sometimes our tool may wrong but not our users.

Are We Wrong To Think We're Right? Then Give Right Answer Below As Comment