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For this next test you will need either a nail, paper clip, or glass jar.
For this next test you will need either a nail, paper clip, or glass jar.
For Jar, scroll down.
Does your nail or paper clip scratch the rock?
Does your nail or paper clip scratch the rock?
If you have a glass jar instead choose from below.
If you have a glass jar instead choose from below.
(Be careful, use supervision if required).
Mineral can scratch deeply into the jar. When I wipe the powder away there is a scratch left on the jar.
Mineral can scratch deeply into the jar. When I wipe the powder away there is a scratch left on the jar.
Mineral cannot scratch jar. Powder might be left behind but when i wipe it away, no scratch remains on jar.
Mineral cannot scratch jar. Powder might be left behind but when i wipe it away, no scratch remains on jar.
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