Question

comment upon the following Rigity ,fluidity,density ,kinetic energy

Answer 1

rigidity- the ability of solids that they can not be bend
fluidity -the ability of fluids(liquid,gases)that they can flow easily
density-the abiliy of solids and liquid that they are heavy
kinetic energy - the energy produced by the motion of particles of matter

Answer 2

rigidity: the ability of matter that it can or cannot be broken
fluidity:a characteristic of matter that it can flow or not
density:mass per unit volume of a substance
kinetic energy: movement of particles of matter