solid is a kind of state of matter & gold is a kind of solid -> silver is in mist u.s gold is in solid state  pluto is steam at outside australia & liquid is a kind of state of matter -> mercury is in liquid state mercury is in liquid state  silver is in mist u.s & mercury is in liquid state -> gold and mercury are in different states of matter gold and mercury are in different states of matter  gold and mercury are in different states of matter & u.s of energy is a mean of physical public -> gold and mercury are different in a physical property