Anyone correct me if i'm wrong, but I believe it is the iris?
It could be used as a buffer, since it is not a conductor. Hope this helps!!!
Two factors determine whether a substance is a solid, a liquid, or
a gas:
<span>
1) The kinetic energies of the particles (atoms, molecules, or ions) that
make up a substance. Kinetic energy tends to keep the particles moving
apart.<span>
'
2) The attractive inter molecular forces between particles that tend to draw
the particles together.</span></span>
<span />
I believe the first one is correct.
