Science - heating and cooling in Elm Class

We had amazing fun in Elm Class on Thursday when we looked at how materials heat and how we cool them.  We were all given a chocolate button wrapped in tin foil and used the heat of our hands to melt the chocolate. It was great fun.  We then put some of the chocolate buttons back into the freezer and realised that we could make the chocolate button freezer back into the same shape. Some of us understood the term reversible change.

We then moved onto using bicarbonate of soda and vinegar to see what happened ! The squeals of delight could be heard across school as the mixture became foamy and fizzy !  
 

A great science lesson with Mrs Callander!