Answer:
I am heavy forward but backward I'm not.
Lighter than what I am made of. More of me is hidden than seen. What am I?
I am the key that is the hardest to turn
Itβs red, blue, violet and green. No one can reach it, not even the queen. What is it?
I go around in circles but always straight ahead never complain no matter where I am led. What am I?
Why is the letter B always cool?