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  • hi , do you know the chemical property of iron.
  • of cause, it's formula is Fe, and it is non toxic,it reacts with very hot water and steam to produce hydrogen gas
  • you are so smart, how about hydrogen and calcium
  • The physical property of hydrogen is colorless,it changes from a gas to a liquid at a temperature of -252.77°C it is tasteless
  • And the color of calcium is silvery-white metallic , it's melting point is 851°C,Boiling point is 1482°C
  • Wow,you are good at the chemistry elements.
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