Phys+Chem+Properties

We added a separation activity. The students had to illustrate the separation procedure using concept maps. A written problem was assigned. The problem involved the separation of a four component mixture by means of their solubility properties. The mapping software I planned to use required leopard and the lab's computers were using a tiger. We found other mapping software but we decided to let the students map by hand. We had to give them hints individually on how to do the mapping.

They enjoyed the challenge provided by the four component mixture separation. They liked the puzzle aspect.

ph indicator strips were distributed and the students were offered the option of testing for ph. We decided against electronic ph meters. Just too many things to do.