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Anatomy of an Egg with Dan Kohler

Anatomy of an Egg with Dan Kohler

What materials do we need for this experiment?
  • Eggs
  • White vinegar
  • Container

How do we do this experiment?
We use the white vinegar to dissolve the eggshells so that only the clear, see-through membranes remain to hold everything together.

  1. Put eggs in a container and pour enough white vinegar in them so that it covers them completely.
  2. Put a lid on the container and slide the container in the fridge for 24 hours.
  3. The next day, remove the container from the fridge and pour out the vinegar and then pour a fresh batch of white vinegar over them again and place in fridge for another 24 hours!


Why does the vinegar make the eggshells disappear?
Eggshells are made of calcium carbonate and vinegar contains acidic acid, which separates the calcium from the carbonate. The calcium dissolves into the vinegar, the carbonate bubbles away as carbon dioxide, just like your breath! Eggshells have a thin membrane inside which you may have seen if you've peeled a hardboiled egg. Once that eggshell has dissolved, the membrane holds the raw egg intact. You can even bounce them!
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