E. Answer the following questions. 1. Why do solids have a fixed shape and a definite volume?
2. Briefly describe an activity to show that pure water is a transparent liquid.
3. Describe an activity to show that a solid can diffuse slowly into a liquid
5. Suggest one activity to show the effect of temperature on the solubility of a solid in water.
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Answers
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1 => Solids have a definite volume and shape because particles in a solid vibrate around fixed locations. Strong attractions between the particles in a solid restrict their motion, keeping them in place
2=>Take a beaker half-filled with clean water. Put a coin in beaker of water. Place the beaker undisturbed for a few minutes where enough light is present. ... This proves that water is a transparent liquid.
3=>The slow diffusion of solids in liquid can be observed in the experiment where potassium permanganate is added to water. Place some potassium permanganate in a beaker, add some water to it and observe. ... This is caused due to the diffusion of the solid particles of the potassium permanganate into the water/liquid.
4=>take equal volume of water into separate glass tumbler. heat the water in one of the tumbler and equal amount of sugar into tumbler and stir. the sugar dissolve keep on adding measured amount of sugar into tumblr till it stop dissolving. ... you will find the amount of sugar dissolve in hot water is more.
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