Saturday, January 29, 2011

Super Easy Mini-Science Project: Soft Shelled Eggs

Scientists are inherently curious people. My curiosity is limited to peoples' lives - therefore, I believe that gossiping is a science more than an art.

That, I don't want to pass on to the children. As much as I adore my former teachers, I didn't get to practice curiosity much being educated in public school and all. By the time I entered university, I was set on my ways and my views on laboratory practices mainly includes chatting with classmates, attempting to run away and succeeding at running away from the experiments.

I know I missed a lot. Therefore, I am making amends through my educating my very own children. Or attempting to educate my children. Attempting is good enough, I think. I don't pretend I know this stuff or more so - good at it, hence the "super easy" title which serves as disclaimer for the brilliant scientists who might stumble upon this blog or series of this blog. (Gosh, what you doing reading this blog anyways, go invent something!)

So here goes my first attempt and I want to believe I did pretty good at triggering the WHYs  from Kylie , which of course I had to Google to be able to answer. (long live Google!)


What we used: 
hard boiled eggs
coke (this is for my own curiosity - you don't have to include this)

What we did:
We felt the egg shell. Noted it was hard. Here's the point I taught her about calcium carbonate which makes the egg shell hard.

We poured vinegar into cup. And then we add the egg. Kylie noted the bubbles rising from the egg at this point.

I didn't notice - but noticed the bubbles rising when I poured the coke into cup. I took a sip while Kylie was looking at the vinegar and egg.

We left the eggs overnight.

The morning after, we took out the eggs from the cups.

The egg in the vinegar turned too soft. The vinegar contains acetic acid. When the calcium carbonate combined with the acetic acid, the reaction takes place and carbon dioxide is released (Remember those bubbles Kylie? That was carbon dioxide!) And the reaction keeps happening until all of the carbon in the egg is used up. All the carbon floated out of the eff in those little bubbles when we take the egg out of the vinegar.

The egg in the coke turned black. Lesson: Do not drink coke, your bones will turn black. She bought it - come on! It was 5AM!

NEXT: KNOTTED BONES. We'll use the same principle - I just need to look for a long bone, volunteers anyone?

1 comment:

  1. Nice experiment!

    Visiting your blog today :-)


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XOXO Turknoys


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