What Am I Riddles

Question: It dies when it's hot, exists when it's cold, you can touch it, but you cannot bounce it, and it doesn't give you any gold. What am I?

Question: Cut my skin out. I'm not going to cry, but you will! What am I?

Question: When it is alive we sing, when it is dead we clap our hands. What is it?

Question: I am in everything and in nothing, what am I?

Question: What is only a small box but can weigh over a hundred pounds?