Changing Materials

During our science lesson we talked about materials.  There are lots of different materials but we decided to experiment on jelly, sand, wax, sugar and salt.  Materials change in hot water so we checked if these 5 materials will dissolve.  We tested wax first and it seemed to disappear.   The same happened to salt and sugar.  They did not really disappear.  We know that because the water tasted sweet or salty.  Also when the wax water cooled down, the wax became solid again.  The jelly dissolved as well and the water changed colour.  The only material that did not melt was the sand.  We already knew that!  When we go near the sea in summer the sand remains the same in the sea water.

Year 3 Crickets