What is the primary cause of diffusion? A) that some substances can dissolve in solvents B) heat added to a substance C) random internal motion of atoms and molecules D) attraction of opposite atomic charges

Carlton Burgess on April 15, 2018

Answerc). random internal motion of atoms and molecules. Explanation of Diffusion is the movement of particles from a region of high concentration to region of low concentration. The rate of diffusion can be increased by the increase of the temperature, but this is not its main cause. The diffusion is mainly caused by the movement of the molecules or atoms in the substance. Form of the choices given, the correct answer is c. random internal motion of atoms and molecules.