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General Parenting
periodic table meltdown
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<blockquote data-quote="HaoZi" data-source="post: 480416"><p>My bad on the talc, I was thinking the Mohs scale, it's magnesium. Modern pencil leads are graphite (an allotrope of carbon). Would you happen to have some iodine on hand she could make a stain with?</p><p></p><p>ETA: zinc lozenges? Would the cobalt blue crayon be good enough to rep cobalt? A can for tin (even if they're not made of that anymore)?</p></blockquote><p></p>
[QUOTE="HaoZi, post: 480416"] My bad on the talc, I was thinking the Mohs scale, it's magnesium. Modern pencil leads are graphite (an allotrope of carbon). Would you happen to have some iodine on hand she could make a stain with? ETA: zinc lozenges? Would the cobalt blue crayon be good enough to rep cobalt? A can for tin (even if they're not made of that anymore)? [/QUOTE]
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