the melting point
Melting is the opposite of freezing. Condensation is the opposite of boiling.
This involves a change of state of the water. Before, during, and after the boiling, it remains water. So, since the substance doesn't change its character, the boiling of water is a physical change.
Below boiling point of water, water gets changed from liquid form into vapour form. This is called as vaporization. Thus change of state is possible even below boiling point. An liquid can be changed into solid at its freezing point. This is also a change of state.
The phase change that occurs at the boiling point is liquid to gas. This is when a substance changes from a liquid state to a gaseous state due to the absorption of heat energy.
Boiling of water and vaporization is a change of state from liquid to gas. It occurs when the liquid is heated to its boiling point, causing the molecules to gain enough energy to overcome the intermolecular forces holding them together in the liquid state.
vaporization There are two types of vaporization - evaporation and boiling.
the opposite of boiling is freezing
It is not. The boiling point of water (at standard pressure) is 100 deg C while the freezing point is 0 deg C. 100 is not the same as 0!
The change from the liquid state to the gas state is vaporization (boiling) or evaporation.
boiling a phyisical change... but not chemical ( making it a new substance )
By freezing, melting or boiling.
CONDENSATION
Physical ... it's only a state change. Cool it and it reverts to its old condition.
Boiling (or freezing) water (the change to steam or ice).
plasma
this is called as boiling or vaporisation
Boiling point
The change in state from the liquid to the gas state is called vaporization. There are two types of vaporization, evaporation and boiling. You are describing boiling.