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Hydrogen is an active element that is very active chemically. It forms covalent bonds with many other elements, and even with itself to form a diatomic molecule. Because of this, hydrogen atoms are rarely found - only the diatomic molecule. Hydrogen bonded to nonmetallic elements creates a substance know as an acid.

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16y ago
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11y ago

1)Hydrogen reacts with oxygen to form water. This occurs very slowly except in the presence of a catalyst or spark. 2)Hydrogen also reacts with the halogens to form hydrogen halides, such as hydrogen bromide. 3&4)Hydrogen also reacts with the halides and oxides of many metals to produce the free metal. For example hydrogen reacts with copper chloride to produce hydrogen chloride and copper, and hydrogen reacts with silver oxide to produce water and silver.

2H2 + O2 --> 2H2O

H2 + Br2 --> 2HBr

H2 + CuCl2 --> 2HCl + Cu

H2 + Ag2O --> H2O + 2Ag

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13y ago

density, boiling point colour odour and shape are all physical properties and characteristics of hydrogen.

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16y ago

I know one is that it's reactive.

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12y ago

It is combustible

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12y ago

hydrogen gas burns in air.

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Q: What statement describes a chemical property of hydrogen gas?
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