8. Metals Generally Have High Melting Points and Boiling Points.
This means that most of the metals melt and vaporise at high temperatures. For example, iron is a metal having a high melting point of 1535°C. This means that solid iron melts and turns into liquid iron (or molten iron) on heating to a high temperature of 1535°C. Copper metal has also a high melting point of 1083°C. There are, however, some exceptions. For example, sodium and potassium metals have low melting points (of less than 100°C). Another metal gallium has such a low melting point that it starts melting in hand (by the heat of our body).
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Matter in Our Surroundings - Notes
2. 7. Metals are Solids at the Room Temperature
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3. 3. Non-Metals are Bad Conductors of Heat and Electricity.
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8. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
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9. 11. Non-Metals Have Many Different Colours.
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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. Chemical Formula for daily use material
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25. Effect of Temperature and Pressure on Solubility
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26. 1. Non-Metals are Not Malleable. Non-Metals are Brittle.
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31. Pure Substances : Elements and Compounds
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33. 3. Metals are Good Conductors of Heat and Electricity.
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34. 4. Non-Metals are Not Lustrous (Not Shiny). They are Dull in Appearance.
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36. Solutions, Suspensions And Colloids
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38. 1. Separation by a Suitable Solvent
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46. Comparison Among the Properties of Metals and Non-Metals
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47. Differences Between Mixtures and Compounds
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50. Separation Of Mixture Of a Solid And a Liquids
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