• a large plastic cup
• a raw egg
• vinegar

1. Place the egg in cup, then pour in enough vinegar to cover the entire egg.
2. What do you notice about the egg shell? Look closely!
3. Leave your egg in the vinegar overnight. Carefully remove the egg from the cup and rinse it off. What does your egg look and feel like now?

What does your egg resemble, after soaking in vinegar for a day?

A water balloon
A golf ball
A tennis ball

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