what? Eh!
.The shell contains calcium when immersed in water, vinegar, the acidity of the water, vinegar, to ทำให้มี reaction occurs. And if the observation to see air carbon dioxide bubbles to catch around the egg to egg is corrosive.And to react with protein called albumin in egg white, protein was เปลี่ยนแปลงสภาพ. A structure similar to rubber