Ether vs Ketone [ENDORSED]

[Isabel Gutierrez 2G]

How do you distinguish between an ether or a ketone given only the structural formula?
For example CH3CH2CH2OCH2CH2CH2CH3

[Selina_Han_3I]

CH3CH2CH2OCH2CH2CH2CH3 is an ether. Try to focus on the carbons surrounding the oxygen. "...CH2OCH2..." Both of these carbons are attached to two hydrogens, another neighboring carbon, and an oxygen. This means thats the bonds around the carbon must be single bonds, and therefore between the carbon and the oxygen must be a single bond. Ketones have a double bond between the carbon atom and the oxygen atom while ethers have single bonds between the carbon atom and oxygen atom. Hope this helps!