4. Metals are Lustrous (or Shiny), and can be Polished.
For example, gold, silver and copper are shiny metals and they can be polished. The property of a metal of having a shining surface is called metallic lustre (chamak). The shiny appearance of metals makes them useful in making jeweller/ and decoration pieces. For example, gold and silver are used for making jewellery because they are bright and shiny. The shiny surface of metals makes them good reflectors of light. Silver metal is an excellent reflector of light.
Notes
Matter in Our Surroundings - Notes
1. 11. Metals Usually Have a Silver or Grey Colour
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2. The Case of a Liquid Solute Dissolved in a Liquid Solvent
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8. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
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9. 3. Non-Metals are Bad Conductors of Heat and Electricity.
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10. 1. Separation by a Suitable Solvent
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11. 6. Metals are Usually Strong. They Have High Tensile Strength.
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18. Chemical Formula for daily use material
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20. 4. Metals are Lustrous (or Shiny), and can be Polished.
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22. To Study the Properties of a Compound of Iron and Sulphur
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29. To Separate a Mixture of Alcohol and Water
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31. 3. Metals are Good Conductors of Heat and Electricity.
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32. To Study the Properties of a Solution
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33. 7. Metals are Solids at the Room Temperature
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34. To Study the Properties of a Colloid
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42. To Separate the Salt-Water Mixture (or Salt-Solution)
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43. To Study the Properties of a Suspension
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45. Experiment to Obtain Coloured Component (Dye) From Ink
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49. 6. Non-Metals are Not Strong. They Have Low Tensile Strength.
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50. To Study the Properties of a Mixture of Iron and Sulphur
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