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<p>[QUOTE="desertgem, post: 3528879, member: 15199"]In beginning chemistry 'chemical bonds' is taught as if all are the same. Then as one goes to the next level, they are taught as ionic and covalent, and then metallic is added and later along further, crystalline and molecular bonding (ice and water simplest). And that is as far as most college degree chemistry goes, but it gets really crazy when quantum effects are involved, but I digress.</p><p><br /></p><p>The green stuff won't dissolve in acetone as it is metallic, a nickel oxide or group of similar compounds.</p><p><br /></p><p>Acetone can not hurt coins as coins are metallic unless you use light levels of water vapor, radiation, and heat with the acetone, and then you might ( 1 chemistry paper claims they did) get a damage reaction, but as uncommon as an authentic silver Lincoln validated by PCGS.</p><p><br /></p><p>All chemicals cost money, so balance the value of the coin with the expense of removing 'stuff' as the a common coin is usually not worth it. IMO, Jim[/QUOTE]</p><p><br /></p>
[QUOTE="desertgem, post: 3528879, member: 15199"]In beginning chemistry 'chemical bonds' is taught as if all are the same. Then as one goes to the next level, they are taught as ionic and covalent, and then metallic is added and later along further, crystalline and molecular bonding (ice and water simplest). And that is as far as most college degree chemistry goes, but it gets really crazy when quantum effects are involved, but I digress. The green stuff won't dissolve in acetone as it is metallic, a nickel oxide or group of similar compounds. Acetone can not hurt coins as coins are metallic unless you use light levels of water vapor, radiation, and heat with the acetone, and then you might ( 1 chemistry paper claims they did) get a damage reaction, but as uncommon as an authentic silver Lincoln validated by PCGS. All chemicals cost money, so balance the value of the coin with the expense of removing 'stuff' as the a common coin is usually not worth it. IMO, Jim[/QUOTE]
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