Update of egg floating experiment from previous post

The egg in our science experiment from 8 weeks ago still floated inside the glass of dissolved salt water. However, the layer of salt crystals on top of the egg became thicker even 3 weeks after I wrote that post.

I mentioned that I would crack the egg when more of the water evaporated (I should have measured the difference to have specific data though; even measuring the difference of the evaporation levels would’ve been a good lesson). Next time!

I carefully moved the thick but crumbly crust of salt onto the counter and cracked the egg in the sink. The egg white, thick and gooey, slowly spilled out where the crack was made. I guessed that maybe the yolk would be black or have turned into a moldy green color. But it was a fascinating finding!

The yolk formed into a squishy round shape and it held its shape even after a poke. My hypothesis is that the egg absorbed the salt slowly through its shell. I need to check with Chris, our science guy at home, but I’ll just trust my guts and post anyway!

If you have a hypothesis to share, please do! Will be interesting to see what ideas you come up with.