A while back I was sent the bouncy egg experiment. That linked to this page and here's another page with additional information.
1 glass somewhat bigger than egg
Ask what you think might happen if you add vinegar.
"I don't know" was the response
Add vinegar, reminding son NOT to overfill the glass.
"it has bubbles".
My son being who he is asked..."Can we try it with bleach?"
Sure we can do that.
So we tried it with bleach.
"it doesn't have bubbles".
I have NO idea as to why bleach makes an egg float. Do you?