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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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