I pour vinegar into a glass and put inside an uncooked egg. After 24 hours I take out this egg. We can see, that this egg hasn't got a shell now and is soft. It is bouncing now.
A calcium is in the egg’s shell. (there is a calcium carbonate, witch makes, that the shell is hard and brittle at the same time). Under the influence of vinegar formed compound and calcium is washed. So vinegar reacts with the calcium- vinegar dissolves calcium. On the egg remains only a membrane, witch the vinegar doesn’t dissolve.
by Żaneta&Kinga
This is one of my favorite experiments.
ReplyDeleteCongratulations
it's not physical experiment
ReplyDeleteOk, but this project is called "Have fun with simple experiments", not "... physical simple experiments".
ReplyDelete