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How to dissolve an eggshell
Gather your materials.
For this experiment you will need a fresh, uncooked egg, a drinking glass, a dissolving solution such as white vinegar or a cola beverage, and 4-5 days of patience. The drinking glass needs to be large enough for the egg to touch the bottom without touching the sides of the glass.
You can also use a plastic cup or container to hold the egg, but clear containers allow you to observe the experiment over time. Use a fresh egg because an older egg will float in the liquid.