Metalloids
There are a few elements which show some properties of metals and other properties of non-metals For example, they look like metals but they are brittle like non-metals. They are neither conductors of electricity like metals nor insulators like non-metals, they are semiconductors. The elements which show some properties of metals and some other properties of non-metals are called metalloids. Their properties are intermediate between the properties of metals and non-metals. Metalloids are also sometimes called semi-metals. The important examples of metalloids are : Boron (B), Silicon (Si), and Germanium (Ge).
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Matter in Our Surroundings - Notes
1. The Case of a Liquid Solute Dissolved in a Liquid Solvent
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2. 11. Metals Usually Have a Silver or Grey Colour
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8. 3. Non-Metals are Bad Conductors of Heat and Electricity.
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9. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
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10. 1. Separation by a Suitable Solvent
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12. To Study the Properties of a Colloid
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15. To Separate a Mixture of Alcohol and Water
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16. 6. Metals are Usually Strong. They Have High Tensile Strength.
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18. To Study the Properties of a Solution
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21. 3. Metals are Good Conductors of Heat and Electricity.
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23. Separation Of Mixture Of a Solid And a Liquids
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25. Chemical Formula for daily use material
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28. To Study the Properties of a Compound of Iron and Sulphur
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32. 6. Non-Metals are Not Strong. They Have Low Tensile Strength.
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34. 4. Metals are Lustrous (or Shiny), and can be Polished.
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37. 7. Metals are Solids at the Room Temperature
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42. To Separate the Salt-Water Mixture (or Salt-Solution)
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43. Separation of Mixture Of Two Solids
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48. 11. Non-Metals Have Many Different Colours.
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49. To Distinguish a Colloid from a Solution
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