Answer:
I must be broken before you can use me. What am I?
If two's company and three's a crowd what are four and five?
Always in you, sometimes on you. If I surround you, I can kill you. What am I?
I stand in one place yet I fill a whole room. I can be filled with molten rock and come in every hue.
It's in your hand though you can not feel it. Only you and time can reveal it.
Give it food and it will live, give it water and it will die.