The Very Next Day!
We used those filter sheets that i was talking about and drew a image on it with colorful markers. After that we poked a hole right in the center and rolled up a piece of paper towel into the hole. Placed the whole thing into a thin flat container full of water. With the rolled paper towel sucking up the water into the filter, it began to move the colors. In the end, the blue color was very easy for the water to move and was all on the ends. However, the green had a difficult time moving with the water. This whole process is called chromatography. Its a chemical separation for substances like ink. In ink. molecules have different characteristics such as size and solubility, this effects the speed of the movement. Soon enough our drawings looked like this---->
No comments:
Post a Comment