This week as part of our school science week Room 6 set up an experiment involving an egg, vinegar and a clear plastic container. We placed the egg into the container and poured vinegar over it. Then we left it over night. The egg started to have lots of bubbles around it and after two days there was a brown bubble floating on the top and the egg was much bigger. On Wednesday Miss Roberts took the egg out of the container and we all got to feel it. It was very soft and squashy and the shell had all gone. Next Miss Roberts bounced the egg and it bounced on the plate.
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| Day one |
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| The brown bubble on top and all fizzy looking. |
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| Bouncing the egg Wow! |
WHY?
Vinegar, an acid, dissolves the calcium in the eggshell. It's calcium that makes the shell hard. But a thin, flexible membrane just under the shell still holds the egg's shape.
1 comment:
Thank you Mrs Roberts for posting about some of the interesting activities you do in Room 6. I really enjoy reading the posts and especially looking at the pictures.
Sarah White (Ned's Mum)
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