The particles that combined in the middle of the structure best describes neutron as neutron is always present in the middle of atomic structure
4. Static, sliding,rolling,and fluid friction
Feathers have more density and less have more mass, feather is super light and a POUND of led isnt
Sugar is the solute since it is the thing that is being dissolved.
And the water is the solvent since it is the thing that contains the solute.