3. Non-Metals are Bad Conductors of Heat and Electricity.
This means that non-metals do not allow heat and electricity to pass through them. For example, sulphur and phosphorus are non-metals which do not conduct heat or electricity. Many of the non-metals are, in fact, insulators. There are, however, some exceptions. A form of the carbon element, diamond is a non-metal which is a good conductor of heat. And another form of carbon element, graphite is a non-metal which is a good conductor of electricity. Being a good conductor of electricity, graphite is used for making electrodes (as that in dry cells).
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Matter in Our Surroundings - Notes
2. 7. Metals are Solids at the Room Temperature
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4. 3. Non-Metals are Bad Conductors of Heat and Electricity.
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8. 11. Non-Metals Have Many Different Colours.
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9. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
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15. 8. Metals Generally Have High Melting Points and Boiling Points.
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19. 8. Non-Metals Have Comparatively Low Melting Points and Boiling Points
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23. To Study the Properties of a Suspension
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24. 1. Non-Metals are Not Malleable. Non-Metals are Brittle.
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25. Effect of Temperature and Pressure on Solubility
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26. Chemical Formula for daily use material
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29. Pure Substances : Elements and Compounds
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31. Solutions, Suspensions And Colloids
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34. 1. Separation by a Suitable Solvent
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35. 4. Non-Metals are Not Lustrous (Not Shiny). They are Dull in Appearance.
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40. 3. Metals are Good Conductors of Heat and Electricity.
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45. Comparison Among the Properties of Metals and Non-Metals
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48. 6. Metals are Usually Strong. They Have High Tensile Strength.
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50. Differences Between Mixtures and Compounds
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