The word carbohydrate is derived from two words - carbon hydrate (water joined to another material). explain why this term in part describes this chemical group

he chemical formula for a carbohydrate is C6 H12 O6  

you have your 6 carbons (the carbo-) and you have 6 water molules (-hydrate). H12O6 means that for every one oxygen there is two hydrogens, which is the set up of a water molecule.  

C+C+C+C+C+C+H2O+H2O+H2O+H2O+H2O+H2O  

=C6 H12 O6  

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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~ trueboss72