What Am I Riddles

Question: Within me you can find gold Also 'The Greatest', if I should be so bold. Unfortunately, as you might see 'The Worst' is also apart of me. What am I?

Question: What's black, white, and red all over?

Question: ***What can so easily be broken and could never be spoken?***

Question: What beats but inflicts no pain?

Question: What white coat lights up and is hot to the touch?