The diagram summarises the common changes of state.
Some substances can change directly from solid to gas, or from gas to solid, without becoming a liquid in between. This is called sublimation. Solid carbon dioxide ('dry ice') and iodine can sublime.
Evaporation can take place at temperatures lower than the boiling point. It describes the change of state from liquid to gas. For example, when a puddle dries.
Boiling is the process in which a liquid evaporates at its maximum rate, at or above the boiling point.
Physical and chemical change
Changes of state are physical changes. The substance remains the same.
It is only during a chemical change that a new substance is formed.