What substances were found within the inner 0.3 au of the solar system before planets began to form?

The substance that are found within the inner 0.3 AU of the solar system just before the planets began to form includes:

rocks,
metals,
hydrogen compounds, 
hydrogen and helium which are in gaseous form

All these components were very essential on the formation of the planets that our solar system has now.

1) when you rub your hands together quickly, the kinetic energy is converted to mechanical energy.2) thermal energy from the sun travels to earth as infrared waves.3) energy is transferred through the matter of space by electromagnetic waves. 4) when a match is burned, chemical potential energy is converted to thermal and radiant energy. 5) seismicwaves are caused by back and forth movement , or vibration, of an object. 6) mechanicalenergy in an engine changes thermal energy into kinetic energy to make a car move.