What you find when you scratch a mineral over an unglazed tile?

What you are referring to is called a streak test. It's used as an aid to mineral identification. As a mineral is drawn over the unglazed tile surface, it is reduced to a streak of dust which reveals the true color of the mineral. If no color is revealed, the streak color is called white. An amet...

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What does nitrogen produce when it is heated?

It produces NO2 and NO3 with release of soot, ash and particulate matter.

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How do you sand blast paint from metal?

How to sand blast paint from metal? With abrasive blasting equipment. For more detail, ask a more specific question.

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Why don't rocks die?

rocks don't die because they are extra special rocks don't die because they are extra special

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