AP BIOLOGY

Detailed explanation-1: -The process by which a drop of ink spreads in a beaker of water is diffusion. Diffusion refers to the process by which molecules intermingle as a result of their kinetic energy of random motion.

Detailed explanation-2: -Ink diffuses in water because of the random motion of water and ink molecules. One can observe ink move from areas of higher concentration to those of lower concentration, and the rate of this movement is proportional to the diffusion coefficient of the ink in water.

Detailed explanation-3: -When the temperature increases, the kinetic energy of the molecules also increases. Therefore, in the hot water the molecules diffuse faster than they are in cold water.

Detailed explanation-4: -It will not dissolve in water. The permanent ink WILL dissolve in rubbing alcohol though.

Detailed explanation-5: -Solution : Ink drop will spread faster as compared to honey. The density of honey is more than that of ink. Therefore, particles in ink diffuse faster as compared to the particles in honey.