properties of natural colloids

Heterogenous nature - Colloidal sols are biphasic in nature. It consists of the dispersed phase and the dispersion medium. In the colloidal solution, each particle is contained within its own surface boundary and therefore has a separate existence from the di..

Brownian movement When a colloidal solution is viewed through a powerful microscope, the colloidal particles can be seen moving in a random zig-zag path. This zig-zag motion of colloidal particles is called Brownian movement. This random motion is due to c..

Macromolecular colloidal particles are formed when on dissolution in a suitable solvent, the macromolecules have sizes which are in the colloidal range. Naturally occurring macromolecules are starch, proteins and cellulose. Man made macromolecules are polymers such as..

Colloids are characterized a) according to the state of the dispersed phase and the state of dispersion medium. b) nature of interaction between dispersed phase and dispersion medium. c) types of particles of the dispersed phas..

Crude rubber is a tough and an elastic solid. It becomes soft and sticky as the temperature rises. Its specific gravity is 0.915. The most important property of natural rubber is its elasticity. When stretched, it expands and attains its original state, when released. Th..

Properties of Natural Rubber - Crude rubber is a tough and elastic solid. It becomes soft and sticky as the temperature rises. Its specific gravity is 0.915. The most important property of natural rubber is its elasticity. When stretched, it expands and attai..

In colloidal systems the number of colloidal particles per litre of the sol is relatively much smaller than solute particles in a true solution. Colloidal particles are aggregates of simple molecules and colligative properties such elevation in boiling point,..

Colloidal sols are biphasic in nature. It consists of the dispersed phase and the dispersion medium. In the colloidal solution, each particle is contained within its own surface boundary and therefore has a separate existence from the dispersion mediu..

Hydrogen combines with non-metals like carbon, silicon, etc. to from covalent compound like halogens. Examples: CH 4 and CCl 4 . Remember : In 1766, Henry Cavendish, an English chemist, discovered hydrogen, by treating iron with dilute sulphuric acid. He also proved that when hydrogen is bur..