Steam produces more severe burns than boiling water. Think why?

Convert the following temperatures to the Kelvin scale.

(a) 27°c

(b) 367°c

How can we smell perfume sitting several metres away from the source?

Fill in the blanks.

a) Temperature does not change while a solid substance is …….. or a liquid substance is…….

b) A vapour on cooling changes into …….and on further cooling changes into……..

c) Matter changes from one state to another either raising the ………… or lowering the …………

d) A change in which a solid on heating directly changes into vapour state is called …………

e) The inter particle spaces are ………… in gaseous and ………… in solids.

Match the following.