Over the last few weeks, we have been investigating changes in materials. We have looked at the process of dissolving by investigating which solids dissolve in water to form a solution. This week, we have looked at the process of melting to identify reversible and irreversible changes. We used tealights to heat different types of food to see what change occurred. From our investigations, we have developed our ability to make predictions as well as detailed observations of what we have seen occur.