Answer:
I am commonly abbreviated to H
I am used to bat with, yet I never get a hit. I am near a ball, yet never thrown. What am I?
I bring light to a dark world. In a current I travel and through tunnels I am hurled. Touch me and I'll kill you. What am I?
The Titanic is still here.
I am lighter than the material I am made of. You see parts of me but more of me is hidden underneath.
Why is the letter B always cool?