first law of thermodynamics conservation of matter and energy first law of thermodynamics No, it isn't. conservation of matter and energy http://www.grc.nasa.gov/WWW/K-12/airplane/thermo1.html www.grc.nasa.gov... first law of thermodynamics www.grc.nasa.gov... conservation of matter and energy first law of thermodynamics No, it isn't. The First Law of Thermodynamics first law of thermodynamics The First Law of Thermodynamics