Oxygen is a non-metal.
oxides or hydroxides
Carbon and oxygen are two natural chemical elements, nonmetals.
Hydrogen and oxygen are already elements. Elements do not contain other elements.
Hydrogen and oxygen are elements.
No. Hydrogen an oxygen are both elements. Elements do not contain other elements.
magnesium and oxygen are elements. They are not compounds
Hydrogen and oxygen are already elements. You don't get elements as a product. You get water, which is a compound.
Carbon, hydrogen, and oxygen
Oxygen is an element and is not composed of other elements.
Nitrogen and oxygen are gases, nonmetals.
Oxygen is its own element.
Just oxygen