Answer:
I have no weight but I could destroy a mansion. What am I?
I open to close but I close to open. I'm surrounded by water but I'm never soaking. What am I?
I drive men mad for love of me, easily beaten, never free. What am I?
Lighter than what I am made of. More of me is hidden than seen. What am I?
I am a seed with three letters in my name. Take away the last two and I still sound the same. What am I?
It weighs next to nothing but no one can hold it for long. What is it?