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

Question: What belongs to you but others use it more than you do?

Question: What has a foot but no leg?