Brain-itching riddles for the weekend

Let's work on some brain-itching riddles.

1. I'm tall when I'm short, I'm young when I'm old, what am I?
2. What must be broken before you can use it?
3. What gets wet while drying?
4. What can't be placed in a pan?
5. What has one eye, yet can't see?


You know the answer? Use the comments section.