Write some chemical properties of hydrogen.​

Chemical properties of hydrogen - Health effects of hydrogen - Environmental effects of hydrogen

Explanation:

Color : Colorless.

Phase : Gas : Hydrogen changes from a gas to a liquid at a temperature of -252.77°C (-422.99°F) : It changes from a liquid to a solid at a temperature of -259.2°C (-434.6°F)

Odor : Hydrogen is an odorless gas.

Taste : A tasteless gas.

It is colorless, it is odorless, it is tasteless, the phase is gas

Explanation:

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

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