Answer:
I'm white and I'm used for cutting and grinding. When I'm damaged people usually remove me. What am I?
I stand in one place yet I fill a whole room. I can be filled with molten rock and come in every hue.
Whoever makes it, tells it not. Whoever takes it, knows it not. Whoever knows it, wants it not. What am I?
You will always find me in the past. I can be created in the present, but the future can never taint me. What am I?
I have a face and two hands, but I have no arms or legs. Six plus seven is one. What am I?
What never gets any wetter no matter how hard it rains?