The "blank form" could be "state".
When a substance changes from one physical form to another, you say the substance has had a phase change or undergone a phase transition.
When a substance changes from one state of matter to another it is called changing its state. Temperature changes are usually the main cause of this change.
Chemical reaction
When a substance changes from one state of matter to another it is called changing its state. Temperature changes are usually the main cause of this change.
Paracelsus
chemical .
water!
energy
Heat is transferred.
When a substance changes from one physical form to another, we say the substance has undergone a phase transition. This can occur through processes such as melting, freezing, evaporation, condensation, or sublimation. Each of these transitions involves changes in energy and molecular arrangement, but the chemical composition of the substance remains the same.
This is a gas, due to it not actually having a definite volume.
The "blank form" could be "state".