Question

Are the three state of matter inter convertible ? How can they interconnect ??

Answer 1

Yes, the three states of matter are inter convertible​ as water converts into liquid, gaseous and solid states. For conversion of any matter in another state one of the two factors are needed
1 Change in temperature
2 Change in pressure

Answer 2

Yes, three states of matter are inter-convertible.

(a) Solid can be changed into liquid by boiling and liquid can be changed to solid by cooling it i.e. by solidification.

(b) Liquid can be changed to gas by vaporization by heating it and gas can be changed to liquid by condensation i.e. subjecting it to low temperature.

(c) Solid can be changed to gaseous form/state by sublimation and liquid can be changed to solid by condensation.