Materials Required A Sink Paper Towels White Vinegar A Hard-Boiled Egg A transparent Glass Jar with a Lid How to do it Place the hard-boiled egg in the glass jar. Slowly pour in the vinegar until the egg is completely covered with it. Close the jar tightly. Leave this for minimum of a week. After a week, drain the vinegar from the jar. Dry the egg with a paper towel. Ask your child to touch and feel the egg. Explanation The vinegar which is a acid dissolves the eggshell and leaves you with a rubbery egg. Now the egg is like a bouncy ball.
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