answersLogoWhite

0

A compound is a pure substance.

Water is a compound. Compsoed of hydrogen and oxygen COMBINED.

The atmosphere is a mixture of incombined gases , princioally nitrogen and oxygen. Of these two gases combined they would form various oxides of nitrogen, all of which are poisonous.

User Avatar

lenpollock

Lvl 17
∙ 1y ago

What else can I help you with?