Like other molecules, water molecules, H2O (or H-O-H), move, vibrate and rotate in many ways at a temperature above absolute 0. When water molecules are heated up, the total e â¦ nergy of the molecules is increased and result in moving, vibrational and rotational speeds increase. The structure of a water molecule provides a special attracting force between water molecules, hydrogen bond, to keep water molecules together.
Unitary All power is held by the central (national) government. This central government may delegate (or transfer) some duties to smaller political units like cities but it retains final authority over all decisions. Unitary central governments are stronger than federal central governments.
Federal government is a type of national government in which government have powers to delegates the power to other elected member of the states. There can be two level of federal government in a country either it is performing through common institutions or through powers as prescribed by a constitution of the state.