Question

Water is initially present in a state where it's molecules are far apart. During a change of state it's molecules slow down which chance of state most likely taken place

(A) gas to liquid
(B) liquid to gas
(C) solid to liquid
(D) gas to plasma

Answer 1

(A) gas to liquid is most likely to take place. This change from gas to liquid is the forming of water molecules. Gas particles have the most energy and therefore speed up the most, whereas solids have the least amount of energy and slow down. The intermediate step from gas to solid is a liquid. We call this process from gas to liquid condensation.