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How to make a green omelet

Cooking a green omelet

Ex­per­i­ments are all very well and good, but we still have to eat! In this de­li­cious ex­per­i­ment, we’ll show you how to make a chemist a healthy break­fast! It’s a green omelet with all the fla­vor you love!

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Ob­serve fire safe­ty when us­ing heat­ing de­vices.

This activity has been provided by STEAMfest sponsor MEL Science!”

Step-by-step in­struc­tions 

Dice some red cab­bage and trans­fer to a 1L beaker. Im­merse in hot wa­ter and let cool. Fil­ter the mix­ture. Break and sep­a­rate a few eggs. Add the red cab­bage juice to the egg whites. The egg whites turn bluish-green. Pour the mix­ture into a pre­heat­ed fry­ing pan and add salt and pep­per to taste. The fried eggs turn out green, but smell and taste quite good!

Process de­scrip­tion

Aque­ous so­lu­tions can be neu­tral, al­ka­line, or acidic.

Red cab­bage juice has an in­ter­est­ing fea­ture – it con­tains an­tho­cyanins, which change col­or de­pend­ing on the acid­i­ty of their medi­um. Ini­tial­ly, in a neu­tral medi­um, cab­bage juice has a pur­ple-crim­son col­or. When the cab­bage juice is added to the bowl of egg whites, the mix­ture turns green, as egg whites are an al­ka­line medi­um. The pH re­mains un­changed dur­ing the cook­ing process, and the eggs stay green.

Journal Questions
  1. Did you make the green eggs? What did they taste like?
  2. Are egg whites alkaline or acidic?
  3. Can you think of another food that you could turn green with red cabbage juice?

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Topics

Science
Grade Level
2-3
4-5
6-8
9-12
K-1

Creator

Mel Science

Mel Science

Science experiments for kids, delivered to your door!

Materials

  • eggs
  • red cab­bage
  • salt
  • pep­per
  • bowl
  • fry­ing pan
  • stove

Related Activities

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pH’ing in the Kitchen, part 1
Making pH indicator from red cabbage.
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pH’ing in the Kitchen, part 2
Making pH indicator test strips from red cabbage.
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