Answer:
I'm blue, but when you see me I'm red. You don't see me too often. I'm there for you if you're hurt, but I'm good for you. What am I?
I have more shoes than anybody, but less feet than everyone. I am met in the morning, but departed in the night. I may shake as if I'm angry, but I won't bite. What am I?
I am the minerals vital for your good health.
My first two letters say my name. My last letter asks a question. What I embrace I destroy.
I am pronounced as one letter, written with three. I come in blue, black, brown, or grey. Reverse me and I read the same either way. What am I?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.