It's black and it come out in a powder form
The physical description of carbon : It is black and it comes in a powder form A form of carbon is diamond.
oxygen and carbon dioxide
That's a reasonable description of a "hydrocarbon"
Molecules made of carbon and hydrogen are various and diffuse. The best description is that they are hydrocarbons and they burn well.
Two sp2 orbitals overlap to form a sigma bond, and two 2p orbitals overlap to form a pi bond.
A polymer would fit this description.
Glucose lose electrons and hydrogen to form Carbon dioxide.
Quite a few fit that description (including water, carbon dioxide, borane etc.)
Sounds like a description of amino acids.
That sounds like a description of Venus.
Compounds that contain carbon-hydrogen bonding are collectively termed organic compounds. These are simply compounds that would contain hydrogen and carbon elements.
These are the sigma covalent bonds which formed the bonds as sp3 hybridized orbitals.