Any compound MUST be made up of atoms of more that one type - otherwise they are not compounds. The only common characteristic of organic compounds is that they contain atoms of carbon, but a lump of pure carbon need not be organic.
Carbon is present in all organic compounds.
carbon and hydrgen atom (Expansion): Organic chemistry is the study of organic compounds. An organic compound is any compound that contains at least one carbon atom, with the exception of several types of molecules including CO and CO^2, which are technically inorganic.
carbon
carbon
Molecules of only hydrogen and carbon are called hydrocarbons, and they are organic. Hydrogen is the answer.
Sugars and starches are organic compounds. But not all organic compounds are sugars and starches .
All organic molecules contain carbon atoms.
Here, skeleton is a figure of speech. From a biology website: "a hydrogen atom is bonded to an oxygen atom, which in turn is bonded to the carbon skeleton of an organic molecule."
Organic
Sugars and starch are organic compounds. But all organic compounds are not made of sugars and starch.
Organic substances contain carbon and hydrogen atoms. Organic compounds are formed by bonding carbon and hydrogen atoms. There can be more elements too. An atom can never be organic.
Organic compounds are made with carbon and some other atom. Often, this is hydrogen, oxygen, or nitrogen, but occasionally it can be some other element.