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5 thoughts on “fine antique jewelry wholesale Chemical teachers asked us to make small chemical production and small creation, and use the waste materials at home. I am in the third grade and ask for one. Note: No chemical equipment”
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In thought, you can also make a layer of analysis column. Essence But you haven't learned this yet, the water purifier is pretty good
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This: Calcium carbonate in the eggshell, react with the H ions in the vinegar to generate carbon dioxide gas.
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