Answer:
What can be cracked before it's used?
I am not alive but I can die. What am I?
I am black when you buy me, red when you use me. When I turn white, you know it's time to throw me away. What am I?
When I get closer my tail grows longer but when I go away my tail leads the way.
I am whole but incomplete. I have no eyes yet I see. You can see and see right through me. My largest part is one fourth of what I once was.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?