Second Grade

Students celebrated The Dot on Dot Day- Sept. 15.

Students will color a coffee filter with markers. Then spray the magic potion (water) onto the filters and watched the colors blend together. This process is called Chromatography!

Chromatography is one of the simplest techniques for separating the individual components of a mixture. In chemistry, a mixture is a combination of substances that can be separated because they are not chemically bonded. (As opposed to a compound, which has elements chemically bonded together.)

In paper chromatography, a mixture is dissolved and pulled across a piece of paper. The mixture separates because its components travel across the paper at different rates, based on their attraction to the paper or solubility in the solvent.

The word 'chromatography' comes from the two Greek words for 'color' and 'writing.' Students enjoyed seeing this process while learning about The Dot by Peter Reynolds!