8. Non-Metals Have Comparatively Low Melting Points and Boiling Points
(except graphite which is a non-metal having a very high melting point). This means that non-metals melt and vaporise at comparatively low temperatures. For example, sulphur is a non-metal having a low melting point of 119°C. Only one non-metal graphite has a very high melting point (of 3700°C). The majority of non-metals have very low boiling points due to which they exist as gases at room temperature.
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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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13. 6. Metals are Usually Strong. They Have High Tensile Strength.
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17. To Separate a Mixture of Alcohol and Water
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18. Chemical Formula for daily use material
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19. To Study the Properties of a Colloid
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20. 3. Metals are Good Conductors of Heat and Electricity.
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25. To Study the Properties of a Compound of Iron and Sulphur
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30. 4. Metals are Lustrous (or Shiny), and can be Polished.
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33. To Study the Properties of a Solution
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34. To Separate the Salt-Water Mixture (or Salt-Solution)
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37. 7. Metals are Solids at the Room Temperature
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39. To Study the Properties of a Suspension
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42. 8. Non-Metals Have Comparatively Low Melting Points and Boiling Points
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44. Separation of Mixture Of Two Solids
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45. Separation Of Mixture Of a Solid And a Liquids
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48. Experiment to Obtain Coloured Component (Dye) From Ink
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