We put boiled eggs into different liquids - water, milk and fizzy juice - and left them overnight. The next day, we observed how they were affected. We brushed them with a toothbrush and toothpaste in the water tray to see how they cleaned up. We found out that the eggs in water weren't affected at all. We were able to clean the eggs that had been in the milk easily. The eggs that were in the fizzy juice were stained permanently.
