I need help on this riddle?!?!?!?!?!?! Please help!!!!!?

I can be thrown off a tall building and not break. I can be thrown into a car and still not break. But, throw me in to a river or a ocean I will break into pieces. what am I?
 
um maybe salt, because salt never necessarily breaks, but when you put it into the ocean it disintegrates into pieces in the ocean??? idk.
 
Back
Top