After 10 minutes or so you will notice that the foam bits will get pale, or even white: good enough. Now transfer the solution into your container, le...
This instructable will show you how to squeeze the last bits of color out of dried out markers, and make beautiful ice blocks in the process. This is a very kid friendly project that has many teachable moments which are highlighted by text in italics.
Some "dried-up" markers. Darker colors work better. Washable markers are safer to use with the little ones.
An empty carton or other container (any shape will do).
A clear bowl or jug
2 liters of warm water
Step 2: STEP 2: Remove the Ink Foam
Break the end off the marker with a wrenching motion with the pliers. Pull out the foam and applicator and deposit them in a clear bowl filled with warm water. Many reactions (dissolution and diffusion in this case) are faster at higher temperatures. Just let them soak for 5 minutes. If you are lucky, the ink seeps out of the foam bits and creates cool patterns in the water. Squeeze the remaining ink out of the foam with your fingers or a spoon. You can cut the foam into shorter lengths to speed the diffusion of the ink into the water. Increase of surface area increases the speed of any reactions.