Question

which has the least energetic molecules ? a)solids b)liquids c)gases d)plasmas

Answer 1

solid because the molecules are sticked to each other

Answer 2

Answer:  a) solids

Explanation

Solid state : In this state, the molecules are arranged in regular and repeating pattern. The molecules are closely packed that means they are fixed and vibrate in place but they can not move from one place to another, thus have least kinetic energy.

For example : Copper

Liquid state : In this state, the molecules are present in random and irregular pattern. The molecules are closely packed but they can move from one place to another, thus have higher kinetic energy than solids.

For example : water

Gaseous state : In this state, the molecules are present in irregular pattern. The molecules are not closely packed and they can move freely from one place to another and spread out.  Thus have higher kinetic energy than liquids.

For example : Helium gas

Plasma state : In this state, the stars, atoms lose their electrons at very high temperature. The mixture of electrons and nuclei that result is the plasma state of matter.  They have ions which move at high temperatures and thus have high kinetic energy.

For example : Sun