Good egg Bad Egg
To find out
How to tell a rotten egg from a fresh egg without braeking it.
2 fresh eggs, a digital weighing scale, to clear glasss jars, water and a lot of patience.
For this we weighed eggs and picked two that weighed the same. We placed them in water and they stayed at the bottom flat on their sides, like this.
The eggs we chose weighed 61 gm each. We marked them "do not use" and "to rot" so we wouldn't use them by mistake. One was left in the fridge and the other outside to rot.
We placed the now lighter "to rot" egg in water and this time it did not lie horizontally but lifted up slightly standing on its tip. hhmm interesting.
After 2 weeks we weighed the egg again. It now weighed 54 gm That is 7 gm less than it's original weight. Our other egg had been left out by mistake for 2 days and apparently it had also lost some of it's moisture and weighed 2 gm less that is 59gm.
No we placed both the eggs in water to see what would happen?
Here's what we saw.
The egg "to rot" egg stayed afloat, and the other egg stood slightly on its tip.
My Lil Muallims tried pushing it down with their finger a couple of times but bobbed right back up.