Answer: Physical
Reason: The reason why this is a physical change and not another type of change is that in a chemical change the actual substance would be change, and not just how it looks of feels. In the end of it water is melted ice and ice is frozen water. Both changes can also be reverted to get back the original form.
In a physical change, such as a change of state (e.g., from solid to liquid), the substance as whole changes, but its underlying structure remains the same.
This is a physical change and another type of change is that in a chemical change the actual substance would be changed, and not just how it looks or feels. One example of chemical change is milk becoming curd and an example of physical change is melting an ice cube.
So, blank can be filled with physical.
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