Answer:
What turns from red to black as soon as it touches water?
Flat as a leaf, round as a ring. Has two eyes, can't see a thing.
What word starts with 'E', ends with 'E', but only has one letter? It is not the letter 'E'.
Come up and let us go. Go down and here we stay
Break it and it is better, immediately set and harder to break again
I have two eyes in the front and a lot of eyes on my tail