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I originally used this instructable as a demonstration to explain osmosis to my classes. Over the years many of my pupils told me they'd tried it for ...
2 x eggs about 500ml of vinegar (I normally use the distilled white vinegar, but this bottle was only 14p) 2 x 250ml Beakers bag of sugar 2 x 500ml be...
Place each of the eggs into a 250ml beaker and cover with vinegar. Place them in a spot where they wont be tampered with, (then put them somewhere eve...
The eggs now have no shells but are intact. Retrieve them using a spoon, or gently emptying the beakers into a sink. This is normally the only problem...
Place each egg on a balance and measure its mass as accurately as the equipment allows. write each mass and conditions that each egg will be kept in o...
Put one of the eggs in a 500ml beaker and fill with water (don't forget the label). Fill the other 500ml beaker with water and make a saturated sugar ...
Basically remove the eggs, weigh them again, and calculate the change in mass. I have had some amazingly visual effects at this point, the egg in the ...
The water is moving through the eggshell (semi-permeable membrane also called a selectively permeable membrane) from an area of high concentration to ...
Tell the pupils to: a) describe what is happening to each egg. b) calculate the percentage mass change c) draw a graph of class average results.
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