Dissolving a Solid in a Liquid
Potassium permanganate is a purple coloured solid substance and water is a colourless liquid, so we will first study the dissolving of potassium permanganate in water. When a crystal of potassium permanganate is placed in a beaker of water,the water slowly turns purple on its own, even without stirring (see figure 3).colour of potassium permanganate in the whole water of beaker can be explained as follows. Both, potassium permanganate crystal and water are made up of tiny particles. The particles of potassium permanganate are purple coloured whereas the particles of water are colourless. When the potassium permanganate crystal is put in water, its particles separate from one another. These purple coloured particles of potassium permanganate spread throughout water making the whole water look purple (see Figure 4 ).Actually, on dissolving, the particles of potassium permanganate get into the spaces between the particles of the water.
Notes
Sound - Notes
3. 2. Liquid to Gas Change : Boiling (or Vaporisation)
Show Notes
4. 2. Latent Heat of Vaporisation (Liquid to Gas Change)
Show Notes
5. Effect of 'Heating' and 'Cooling' on a Saturated Solution
Show Notes
6. Classification Of Matter As Solids, Liquids And Gases
Show Notes
9. Why Solids, Liquids and Gases Have Different Properties
Show Notes
14. 2. The Particles of Matter have Spaces Between Them
Show Notes
15. 1. Solid to Liquid Change : Melting
Show Notes
16. 3. Gas to Liquid Change : Condensation
Show Notes
20. 1. Latent Heat of Fusion (Solid to Liquid Change)
Show Notes
24. 1. The Particles of Matter are Very, Very Small
Show Notes
26. 4. The Particles of Matter Attract Each Other
Show Notes
28. 3. The Particles of Matter are Constantly Moving
Show Notes
29. Characteristics of Particles of Matter
Show Notes
30. 4. Liquid to Solid Change : Freezing
Show Notes
31. Two More States of Matter : Plasma and Bose-Einstein Condensate
Show Notes
38. The Common Unit Of Temperature and Si Unit Of Temperatre
Show Notes
39. To Show That Solids and Liquids Cannot be Compressed but Gases Can be Compressed Easily
Show Notes
44. To Show that Liquids do not have a Fixed Shape but they have a Fixed Volume
Show Notes
45. To Show the Presence of Water Vapour in Air
Show Notes
49. Gases Can be Liquefied by Applying Pressure and Lowering Temperature
Show Notes
50. To Show that Gases do not have a Fixed Shape or a Fixed Volume
Show Notes