the apperence of hydrogen is colourless, with a hexogonal crystal structure
In its natural form, oxygen is a gas. The fact that you can breath at room temperature lets you know oxygen is a gas at room temperature. Other gases include hydrogen, helium and radon.
hydrogen will melt at room temp
It is a pale yellow gas.
Calcium is a solid, soft dull grey metal at room temperature :)
Only if it is in the pure form it will kill you as there is no Oxygen present
The boiling point of pure HCl is lower than the room temperature.
Polonium has a metallic silvery appearance.
shiny
It is a pale yellow gas.
Calcium is a solid, soft dull grey metal at room temperature :)
the hydrogen bomb which is larger than the atomic one
The answer would be no. In Earth there is no hydrogen source in its pure form. It is only found in compound with other elements.
Hydrogen in its pure state is H2 gas, which is neutral. The ionic form, H+, is acidic.
Protactinium has a metallic appearance.
ok well pure fluorine is coloured pale yellow, it is a highly corrosive and poisonous gas. it has a vitreous and dull lustre. at room temperature it is a gas.
Only if it is in the pure form it will kill you as there is no Oxygen present
No. When in the form of water, hydrogen and oxygen form a compound, which is a pure substance.
The boiling point of pure HCl is lower than the room temperature.
Polonium has a metallic silvery appearance.