Question

define sublimation and fusion​

Answer 1

fusion is the process of conversion of solid into liquid.. solidification is the process of conversion of liquid into solid.

sublimation is the process by which solid directly changes into gaseous state without changing in liquid state and vice versa.

Answer 2

$\sf{\purple{\huge{Sublimation:}}}$

Sublimation is a chemical process that involve the direct conversion of gas to solid on heating and solid to gas on cooling without going through a liquid stage.

$\sf{\purple{\huge{Fusion:}}}$

Fusion is the process in which the change of solid state to liquid state is called fusion it is also known as melting.