Chemistry

Matter in Our Surroundings


6. Metals are Usually Strong. They Have High Tensile Strength.


This means that metals can hold large weights without breaking. For example, iron metal (in the form of steel) is very strong having a high tensile strength. Due to this iron metal is used in the construction of bridges, buildings, railway lines, girders, machines, vehicles and chains, etc. Though most of the metals are strong but some of the metals are not strong. For example, sodium and potassium metals are not strong. They have low tensile strength.

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Notes


Matter in Our Surroundings - Notes
1. 9. Non-Metals Have Low Densities.
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2. 2. Metals are Ductile.
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3. 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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5. 11. Non-Metals Have Many Different Colours.
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6. The Case of Solutions
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7. Properties of Metals
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8. 3. Separation by a Magnet
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9. Concentration of a Solution
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10. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
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11. Impure Substances: Mixtures
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12. 5. Non-Metals are Generally Soft
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13. Non-Metals
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14. Is Matter Around Us Pure
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15. Elements
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16. 6. Separation by Distillation
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17. 8. Non-Metals Have Comparatively Low Melting Points and Boiling Points
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18. 8. Metals Generally Have High Melting Points and Boiling Points.
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19. Types of Solutions
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20. 2. Separation by Centrifugation
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21. 1. Metals are Malleable.
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22. Physical And Chemical Changes
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23. Solutions
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24. To Study the Properties of a Suspension
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25. Pure Substances : Elements and Compounds
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26. Properties of a Suspension
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27. Effect of Temperature and Pressure on Solubility
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28. Metals
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29. 1. Non-Metals are Not Malleable. Non-Metals are Brittle.
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30. 2. Non-Metals are Not Ductile.
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31. Separation of the Gases of the Air
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32. 10. Non-Metals are Not Sonorous.
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33. 1. Separation by Fractional Distillation
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34. To Study the Properties of a Solution
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35. 4. Purification by Crystallisation
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36. Chemical Formula for daily use material
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37. 4. Non-Metals are Not Lustrous (Not Shiny). They are Dull in Appearance.
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38. Separation of Mixture Of Two Solids
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39. To Separate the Salt-Water Mixture (or Salt-Solution)
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40. Metals, Non-Metals and Metalloids
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41. 5. Metals are Generally Hard
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42. 6. Metals are Usually Strong. They Have High Tensile Strength.
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43. 11. Metals Usually Have a Silver or Grey Colour
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44. Compounds
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45. Solutions, Suspensions And Colloids
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46. properties of a Solution
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47. Chemical Changes
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48. 1. Separation by a Suitable Solvent
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49. Separation of Scrap Iron
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50. Separation Of Mixture Of a Solid And a Liquids
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