Is ethane a carbohydrate?

[Aingeal]

Ok I found this topic:

about3744.html

which tells me that ethane isn't a carbohydrate, that it's a hydrocarbonate, but it doesn't explain to me why, and I can't find it in my textbook.

I don't understand...is it because there's more hydrogen in ethane than carbon?
(Ethane: C2H6)

[Trev]

Ethane belongs to alkane range of hydrocarbons substance (or matter, I don`t know, how it sounds in english right). Thier general formula: C2H(2n+2)

Carbohydrates - it`s a sugars =) for example, maltose, glucose.
Their general formula: Cm(H2O)n

[Mjhavok]

Hydrocarbon (hydro = hydrogen and carbon = carbon)

Carbohydrate (Carbo=carbon, hydr = hydrogen, ate = oxygen)

[Aingeal]

Okay, thank you very much!!

[MrMistery]

Carbohidrates are characterised by a carbonil bond. That doesn't mean it can't be something else if it has the carbonil bond, but it needs to have it in order to be a sugar.

[victor]

Hydrocarbon (hydro = hydrogen and carbon = carbon)

Carbohydrate (Carbo=carbon, hydr = hydrogen, ate = oxygen)

carbohydrate
carbo = carbon
hydrate = water (H2O or H-OH) molecules that get attached on anoter atom/molecule..

Carbohidrates are characterised by a carbonil bond. That doesn't mean it can't be something else if it has the carbonil bond, but it needs to have it in order to be a sugar.

I'll add that 'something else'..
as we see that carbohydrate (i.e. maltose or formerly named "4-O-[alpha-D-glucopyranocyl]-beta-D-glucopyranose") has some kinds of groups like -OH, H-C=O, C-H and C-O-C.
And I think that you (Andrew) better put 'group' word instead of 'bond' word (see the highlighted one). It's because we only know two major intramolecular bonds which are ionic bond and covalent bond while others are intermolecular bond like H-bond and VDW forces.

[Enzyme]

- Hydrocarbons only contain carbon and hydrogene (they are the most simplest organic compounds in this world) and can be straight-chained, branched-chained or cyclic. Carbon (the chemical element) form four covalent bonds in a tetrahedral geometry. Hydrocarbon derivatives are built when there is a substitution of a functional group at one or more of these positions. So ethane is a hydrocarbon.

- Carbohydrates are organic molecules which contain carbon, oxygen and hydrogene. Their general formula is CnH2nOn. Commonly we say that carbohydrates have the same atoms of carbon as water molecules, but it is not completely true because the structure of carbohydrates doesn't show any water molecule in it. The structure is a cyclic compound with combined atoms of carbon, hydrogen and oxygen of this form:

[victor]

for a better explainations, see Haworth's projection for carbohydrates and compare it with Fischer's projection...