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Egging on! - Why do eggs turn hard after they’re boiled? (Experiment) |
by Mya Kagan (whyzz writer) >> more about the author
Have you ever come across an egg and been unsure if it was raw or hard-boiled? Here’s an experiment you can use to find out which is which!
Gather together one hard-boiled egg and one raw, uncooked egg still in its shell. Place both down on a flat table and give them a little spin!
Do you notice that both eggs don’t spin equally? The egg that spins easily is the hard-boiled one, and the one that resists spinning is the raw one! The reason for this is that the gooey, watery interior of the raw egg prevents it from spinning because its liquid-like insides are too busy swishing around! The hard-boiled egg spins easily because it’s solid all the way through, so everything moves at the same time when you spin it!