Dear Globus, I can understand your confusion. You want the qualities of the world to be in the world, not in the mind. In the world, colors, sounds, aromas, hardness, etc. exist as physically definable, or as you say, scientific descriptions. Colors are wavelengths of light.
Sounds are vibrations in air.
Aromas are chemical compounds floating in air. Hardness is repulsions among atomic fields. Unless, of course, you are thinking of qualia. Or else, what you may be trying to say is that the physically definable qualities of the world are in the brain - as wavelengths, air vibrations, chemical compounds, repulsions among atoms. Which of course they are, as conceptual ideas of what the world out there is like.