What’s happening? If your figure doesn’t lift up, wait a few moments to see if anything changes. If your figure still does not move, try a different dish. (Editor’s note: For us, non-Pyrex dishes worked best.) Dry-erase markers, unlike permanent markers, are designed to be able to be easily wiped away from smooth, non-porous surfaces like whiteboards or glass. In order to make this happen, the ink has a special oily silicone polymer added, which helps make sure the ink
doesn’t stick to surfaces. The ink used in dry-erase markers is also not soluble in water, so it won’t dissolve. If you add these two things together, you get an ink that won’t stick and won’t dissolve, which is why your drawing separates from the dish when you add water. The dry-erase ink also has one more special property: it is less dense than water. That’s why your drawing floated and moved on the water’s surface.
is! h t this same experiment but then place your hand Try Try straight down on the floating shape. What happened? Did it transfer to your hand? Alternatively, try picking your drawing up out of the water. Can you lift it up? What happens when you put it back in the water? Explore, Discover & Learn!
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