How do you dissolve the shell of your eggs?
When you submerge an egg in the vinegar, the shell dissolves. Vinegar
contains acetic acid. This acid breaks the solid calcium carbonate crystals
that make the eggshell. When they break, they separate the calcium and the
carbonate. The calcium ions float free, while the carbonate makes Carbon dioxide
– the bubbles that you see.
Try to sprinkle one
liver chicken with oxygenated water. What happens? Which chemical reaction
happens? What gas is liberated? We have tried the presence of
Catalasa in the tissues of animals and vegetables.
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