Present the children how limestone utilized in a lake or pond causes the neutralization in the water. Clarify to the kids that the limestone is damaged down by the acid rain and produces a byproduct called calcium acetate. Place a glass cup of vinegar on one facet, and pour a second glass cup containing water. Place a piece of limestone in every cup. Observe the results. The limestone in the glass of vinegar ought to bubble and produce a layer of calcium acetate on the underside, while the limestone within the water is not going to react in any respect.
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