PPT Slide
- Whenever a system gains energy, the surroundings supply that energy and thus lose an equivalent amount. The reverse is also true.
- Energy can be converted from one form into another as it is transferred, but it cannot be created or destroyed.
- The law of conservation of energy (first law of thermodynamics) states that the total energy of the universe is constant.
- The energy of the system plus the energy of the surroundings remains constant: energy is conserved.