Which of the following are compounds? O2, CO2, H2O,H2?



Answers:
A compound is composed of two or more elements. Therefore H2O and CO2 are compounds. O2 and H2 are not.
H2O
Co2,h2o not sure if two of the same elements aer compounds though.
CO2 & H2O The others are just diatomic.
PaulCyp is totally correct
By its very definition - chemical compound - a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight.

Therefore in the above they are ALL compounds with the exception of O2 which is just 2 molecules of oxygen and H2 which is 2 molecules of hydrogen. :)
shouldnt this be in chemistry? but anyway Carbon dioxode (CO2) and water(H2O) are comounds
CO2 and H2O compounds are formed from different elements.
CO2 and H20 are compounds.
co2 and h2o
CO2 and H2O
o2 is ozon
co2 is carbon dioxide
h2o water
h2 is 2 atoms of hydrogen
co2 and H2O are compounds. O2 and H2 are molecular elements.

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