$(a)$ Define boiling point.
$(b)$ Express the boiling point of water in Celsius as well as Kelvin scale.
$(c)$ $A$ diver is able to cut through water in a swimming pool. Which property of matter does this observation show?

(N/A) The temperature at which a liquid starts boiling at atmospheric pressure is called its boiling point.
$(b)$ The boiling point of water is $100^{\circ}C$ on the Celsius scale and $373 K$ on the Kelvin scale.
$(c)$ This observation shows that the particles of matter have spaces between them,which allows the diver to move through the water.