Which option most accurately explains relationships between phases, energy and mobility of the matter?

Molecules making up water vapor have less energy and are less mobile than ice.
Molecules making up water vapor have less energy and are more mobile than ice.
Molecules making up water vapor have more energy and are more mobile than ice.
Molecules making up water vapor have more energy and are less mobile than ice.

the atomic mass is the bottom number on the element.

-steel jelly

b.final

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.