In 2Q we decided to look at irreversible and reversible changes.  Mrs Rogers told us some changes that were irreversible...bread to toast or raw to booked and some that were reversible...water to ice for example.  

We realised that melting chocolate could be reversed, we could set it in the fridge - but we realised along the way it would never take on it's original form again, so whilst the change had been reversed, it wasn't completely back to it's normal state.  

The, we ate the chocolate...which took us from hungry to full!  A reversible change...