2. The Particles of Matter have Spaces Between Them
The spaces between the particles of matter can be shown by performing the following experiment by using water and sugar. We take about 100 mL of water in a beaker (Water is a kind of matter). Mark the level of water in the beaker with a marking pen [as shown in Figure 10(a)]. Also take 50 grams of sugar.Now add 50 grams of sugar in water in the beaker. Dissolve the sugar by stirring it with a glass rod [see Figure 10(&)]. When all the sugar has dissolved, we get a sugar solution. Let us look at the level of sugar solution in the beaker. We will find that the level of sugar solution in the beaker is at the same mark where water level was initially in the beaker [see Figure 10(c)]. This means that even after dissolving 50 grams of sugar in 100 mL of water, the volume has not increased. This can be explained by assuming that the particles of water have some spaces between them.
When sugar is dissolved in water, its crystals separate into very fine particles. These particles of sugar go into the spaces between the various particles of water due to which there is no change in the volume of water on dissolving sugar in it. The fact that there is no change in volume on dissolving sugar in water tells us that there are spaces between the particles of water. And these spaces accommodate the sugar particles. This also gives us another conclusion that the particles (or molecules) in water are not tightly packed, they are somewhat loose, having spaces between them.
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3. 2. Liquid to Gas Change : Boiling (or Vaporisation)
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4. 2. Latent Heat of Vaporisation (Liquid to Gas Change)
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5. Effect of 'Heating' and 'Cooling' on a Saturated Solution
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6. Classification Of Matter As Solids, Liquids And Gases
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9. Why Solids, Liquids and Gases Have Different Properties
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14. 2. The Particles of Matter have Spaces Between Them
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15. 1. Solid to Liquid Change : Melting
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16. 3. Gas to Liquid Change : Condensation
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20. 1. Latent Heat of Fusion (Solid to Liquid Change)
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24. 1. The Particles of Matter are Very, Very Small
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26. 4. The Particles of Matter Attract Each Other
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28. 3. The Particles of Matter are Constantly Moving
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29. Characteristics of Particles of Matter
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30. 4. Liquid to Solid Change : Freezing
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31. Two More States of Matter : Plasma and Bose-Einstein Condensate
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38. The Common Unit Of Temperature and Si Unit Of Temperatre
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39. To Show That Solids and Liquids Cannot be Compressed but Gases Can be Compressed Easily
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44. To Show that Liquids do not have a Fixed Shape but they have a Fixed Volume
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45. To Show the Presence of Water Vapour in Air
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49. Gases Can be Liquefied by Applying Pressure and Lowering Temperature
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50. To Show that Gases do not have a Fixed Shape or a Fixed Volume
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