chemistry

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Across
  1. 2. two phases - the dispersed phase and the dispersion medium. Colloidal systems
  2. 6. solids adsorb gases. The extent of adsorption of a gas on a solid depends upon
  3. 8. than in the bulk. The substance adsorbed is known as adsorbate and the
  4. 9. oil in water type and (ii) water in oil type. The process of making emulsion is
  5. 12. of gas, nature of solid, surface area of the solid, pressure of gas and
  6. 13. on which adsorption takes place is called adsorbent. In physisorption,
  7. 14. dispersion medium (ii) nature of interaction between the dispersed phase and
  8. 15. added. Soaps and detergents are most frequently used as emulsifiers. Colloids find
  9. 16. changing the colloidal particles in a sol into the insoluble precipitate by addition
  10. 17. some suitable electrolytes is known as coagulation. Emulsions are colloidal systems
  11. 18. is the phenomenon of attracting and retaining the molecules of a
  12. 19. of the reactants.
  13. 21. on the surface of a solid resulting into a higher concentration on the
  14. 23. In homogeneous catalysis, the catalyst is in the same phase as are the
  15. 25. of gas. The relationship between the extent of adsorption (x/m) and
  16. 26. classified in three ways depending upon (i) physical states of the dispersed phase
Down
  1. 1. solutions are intermediate between true solutions and suspensions.
  2. 3. medium and (iii) nature of particles of dispersed phase. The colloidal
  3. 4. and in heterogeneous catalysis the catalyst is in a different phase from
  4. 5. adsorbate is held to the adsorbent by strong chemical bond. Almost
  5. 7. as emulsification. To stabilise an emulsion, an emulsifying agent or emulsifier
  6. 10. getting used up in the reaction. The phenomenon using catalyst is known as
  7. 11. of the gas at constant temperature is known as adsorption isotherm.
  8. 14. is held to the adsorbent by weak van der Waals forces, and in
  9. 19. size of the colloidal particles range from 1 to 1000 nm. A colloidal system consists
  10. 20. which both dispersed phase and dispersion medium are liquids. These can be of:
  11. 22. show interesting optical, mechanical and electrical properties. The process
  12. 24. applications in industry as well as in daily life.