What are the characteristics of carbohydrates

Carbohydrates (also called saccharides) are molecular compounds made from just three elements: carbon, hydrogen and oxygen. Monosaccharides (e.g. glucose) and disaccharides (e.g. sucrose) are relatively small molecules. They are often called sugars.

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex