Elements, Metals and Compounds Facts

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  1. The lightest metal is Lithium.
  2. The most important ore of aluminium is Bauxite.
  3. The element present in the largest amount in rocks and minerals is Silicon.
  4. An alloy used in making heating elements for electric heating devices is Nichrome.
  5. Diamond is an allotrope form of Carbon.
  6. Air is a Mixture.
  7. The best conductor of electricity is Sea water.
  8. Balloons are filled with Helium.
  9. The most abundant metal in the Earth’s crust is Aluminium.
  10. Chlorofluorocarbons (CFC) gas is used in Refrigerators.
  11. The gas used to extinguish fire is Carbon dioxide.
  12. Silicon carbide is used in making cement and glass.
  13. The element common to all acids is Hydrogen.
  14. Biogas contains mainly Methane.
  15. The most malleable metal is Gold.
  16. Sulphur is used for making hair setting products.
  17. A non-ferrous metal is Aluminium.
  18. The only liquid element that remains at room temperature is Bromine.
  19. Radium is obtained from Pitchblende.
  20. Laughing gas is Nitrous oxide.
  21. Diamond is used for making protective windows in space probes.
  22. The form of phosphorus used in safety matches is Red phosphorus.
  23. Stainless steel is an alloy of Iron, chromium, and nickel.
  24. Mercury forms an amalgam with other metals.
  25. Azurite is not an ore of aluminium.
  26. Diamond is an element.
  27. Sugar is the most soluble in water.
  28. Sodium metal is kept under Kerosene.
  29. Lead is used in storage batteries.
  30. Water has maximum density at 4°C.
  31. Non-stick cooking utensils are coated with Teflon.
  32. The chemical name for urea is Carbamide.
  33. Permanent hardness of water can be removed by adding Washing soda.
  34. The formula for plaster of Paris is 2CaSO₄·H₂O.
  35. Mica is a bad conductor of electricity but a good conductor of heat.
  36. The pair that does not contain a coinage metal is Zinc and Gold.
  37. Graphite is used in pencils.
  38. The second most abundant metal in the Earth’s crust is Iron.
  39. Silver is the best conductor of electricity.
  40. Washing soda is the common name for Sodium carbonate.
  41. The filament of an electric bulb is made of Tungsten.
  42. Bleaching powder is made from Lime and chlorine.
  43. The two elements frequently used for making transistors are Silicon and germanium.
  44. Hydrogen is not known as a greenhouse gas.
  45. Sulphur dioxide is not a neutral oxide.
  46. The gas usually filled in the electric bulb is Nitrogen.
  47. Heavy water is Deuterium oxide.
  48. The gases used in welding include Oxygen and acetylene.
  49. Permanent hardness of water may be removed by the addition of Sodium carbonate.
  50. The lightest gas is Hydrogen.
  51. Potassium nitrate is used in Fertilizer.
  52. Ammonia is lighter than air.
  53. Mercury remains in liquid form under normal conditions.
  54. Two or more forms of the same element having different physical properties are called Allotropes.
  55. Silica is not a compound.
  56. Graphite is used as a lubricant.
  57. The purest form of iron is Wrought iron.
  58. The percentage of carbon is least in Wrought iron.
  59. Emerald is Deep green in color.
  60. The first metal discovered by humans was Copper.
  61. Marsh gas is Methane.
  62. Carbon, diamond, and graphite are together called Allotropes.
  63. Galvanized iron sheets have a coating of Zinc.
  64. Permanent hardness of water due to sulphates of metals can be removed by the use of Zeolites.
  65. Titanium is called a strategic metal.
  66. Liquefied petroleum gas consists mainly of Butane and propane.
  67. The metal present in photo films is Silver.
  68. Soda water contains Carbon dioxide.
  69. The basis of the modern periodic table is the Atomic number.
  70. Bronze is an alloy of Zinc and copper.
  71. The element required for solar energy conversion is Silicon.
  72. Monazite is an ore of Thorium.
  73. Water is a compound because it contains two different elements joined by chemical bonds.
  74. The element nickel is a Magnetic metal.
  75. The hardest substance available on Earth is Diamond.
  76. The ratio of pure gold in 18-carat gold is 75%.
  77. The highest grade of coal with a shining surface and the highest calorific value is Anthracite.
  78. The element found on the surface of the moon is Titanium.
  79. The average salinity of seawater is 3.5%.
  80. The most stable element is Lead.
  81. The inert gas substituted for nitrogen in air, used by deep-sea divers for breathing, is Helium.
  82. The characteristic not shown by hydrogen is that it supports combustion.
  83. The element obtained from seaweeds is Iodine.
  84. The gas used for the preparation of soda water is Carbon dioxide.
  85. Bell metal is an alloy of Tin and copper.
  86. The gas that usually causes explosions in coal mines is Methane.
  87. In fireworks, the green flame is produced because of Barium.
  88. The element required for solar energy conversion is Silicon.
  89. Helium was discovered first in the chromosphere of the sun.