Day 2 of Egg Lab

Yesterday you took your eggs ouf of the vinegar, weighed them and measured a final volume left in the beaker.  You noticed that the egg weighed more and the there was less vinegar in the beaker than when you left it yesterday.  This was letting you see diffusion in action!  You had the fun opportunity to take the shell off the eggs and 2 of you managed to break your egg..... sorry about that guys!!!

Here were some pics from today.

egg out of vinegar

Taking the shell off the egg

shell completely off egg

Ooops!!!!

"I didn't MEAN to!!!  I was just Holding it and
it broke!!!"

I also showed you how Iodine moved into a cell membrane.  Below is an image of a bag full of corn starch.  In just water it remains white.  When placed in iodine - the iodine molecules were able to move across the membrane into the bag.  We know this because the corn starch turned a bluish black color.  In the presence of iodine complex carbohydrates turn this color.

Bag in water

Bag once placed in iodine