How to Tell if Eggs are Raw or Hard Boiled

You boiled a bunch of eggs yesterday, but now you can't remember which ones are raw and which are hard boiled. The good news is, you don't have to break them all to correct your mistake. Just use this easy test to tell your eggs apart. Does this Spark an idea?

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Instructions

- 1
  
  Place the egg in question on a flat surface like a countertop.
- 2
  
  Place the egg lengthwise between your thumb and forefinger and give it a good spin.
- 3
  
  Let the egg spin on the countertop for a few seconds.
- 4
  
  Stop the egg quickly with the tip of your finger.
- 5
  
  Take your finger away and watch the egg. If it keeps spinning, it's raw. If it stops, it's hardboiled.

Tips & Warnings

The raw egg keeps spinning because the liquid inside doesn't stop as fast as the outer shell. This is a fun science experiment for kids.

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