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The Incredible Egg
An egg is a small science lab all by itself! The hard outer shell is made of calcium carbonate, the same material in chalk and seashells.
Calcium carbonate is a base, which is the opposite of an acid. When an acid meets a base, they react! Vinegar is a mild acid from your kitchen. What do you think will happen if you put an egg in vinegar? Will the hard shell survive, or will the acid do something to it? Make your prediction!