It's a physical change. All changes of state (solid to liquid, or liquid to gas, for example) are physical changes.
Melting: change of phase from solid to liquid Boiling: change of phase from liquid to a gas
The Boiling Point of water is a Physical property. When you boil the water and it changes from liquid to gas, that's a physical change.
It is a physical change. All phase changes are physical, not chemical. The chemical composition of water does not change when it changes from a liquid to a gas, or for that matter, to a solid.
When a liquid reaches boiling point it goes through a phase change, liquid to gas. Phase changes do not change the nature of a chemical so it is a physical change. This physical change can sometimes be caused by a chemical change though.
Yes, both are physical changes.
The change from a liquid to a gas is a physical change called vaporization. Vaporization can occur slowly, as in evaporation, or rapidly, as in boiling.
Boiling is a physical change because there is no change in the chemical composition of the substance.
No, boiling points and freezing points are physical constants that are unique to each substance. The phase change between solid and liquid and between liquid and gas is a physical change.
Because it physically changes from a liquid state to a gaseous state.
Melting and boiling are changes of state. Melting changes state from solid to liquid, and boiling changes state from liquid to vapor. Thus, these are physical, not chemical changes. All of the heat energy that goes into changing solid to liquid or liquid to vapor (or any change of state for that matter), is used only to change the state and therefore the temperature of the system does not change.