Aerogel, Nanotechnology, Organic Chemistry.
The Carbon Atoms are connected in the form of a ring, and the carbon bonds are single-bonded to other atoms. Ether → Substituents (mostly alkyl) are attached to an oxygen atom. Ketone → A carbonyl group (C=O) attached to hydrocarbons. Carboxylic Acid → A group with a carbonyl group (C=O) and a