Is a boiling point chemical property of a substance?

Boiling is a physical change not a chemical property change. Changes of a substances state are physical changes. In a chemical change, a new compound or substance is the result. In a physical change no new substance is formed.

Example: Water - whether it's a solid (ice) liquid (water) or a gas it's the same substance. When the water boils it changes to steam(gas) which is still water in the air, and when we cool down the gas (condensation) it changes back to water.