The hydration of anhydrous cobalt chloride is a chemical change.
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When CCl2 is added to water, it undergoes a physical change because the molecular structure of both substances remains the same. The CCl2 molecules simply disperse throughout the water, forming a homogeneous solution, without any new chemical bonds being formed or broken.
Physical
Carving pumpkin physical change or chemical change
No, this is definitely a physical change, absolutely not a chemical.
Dissolving in water is a physical change.
It is a physical change.