Scratch my head, see me turn from black to red. What am I?

Answer: A MATCH STICK

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More What am I ?

Send poorly behaved children to me and let them sit here. What am I?
Shoot at me a thousand times and I may still survive; one scratch from you and me will find your prospects take a dive. What am I?
Should I break, you may be harmed, or else set free - It all depends on where we're found; I in you, or you in me? What am I?
Sing me to a baby about to go to sleep. What am I?
Skirts for men. What am I?
Soft, hairy, from door to door. I am the pet that always stays on the floor. What am I?
Soldiers line up, spaced with pride, Two long rows lined side by side, One sole unit can decide, If the rows will unite or divide. What am I?
Some people avoid me, some people count me, some people just consume me. What am I?
Some people believe in me and others don’t at night I roam around and sometimes I float. If you hear a troubled noise coming from the ground go run and hide from my creepy sound. What am I?
Sometimes dark and sometimes bright, I make my way among twinkling lights. Seas and oceans obey my call, yet mountains I cannot move at all. My face is marred and gray, but I’m majestic anyway. What am I?
Sometimes I am light, sometimes I am dark. Most people like me. What am I?
Sometimes I am light, sometimes I am dark. What am I?