
Aldehyde - Wikipedia
In organic chemistry, an aldehyde (/ ˈ æ l d ɪ h aɪ d /) (lat. alcohol dehydrogenatum, [1] dehydrogenated alcohol) is an organic compound containing a functional group with the structure R−CH=O. [2]
Aldehyde | Definition, Structure, Examples, & Facts | Britannica
Mar 31, 2025 · Aldehyde, any of a class of organic compounds in which a carbon atom shares a double bond with an oxygen atom, a single bond with a hydrogen atom, and a single bond with another atom or group of atoms (designated R in general …
18.7: Aldehydes and Ketones - Chemistry LibreTexts
May 25, 2021 · The difference between aldehydes and ketones is the placement of the carbonyl group within the molecule. An aldehyde is an organic compound in which the carbonyl group is attached to a carbon atom at the end of a carbon chain.
What are aldehydes: definition, structure, and examples
Aldehydes are defined as organic compounds that contain a functional group known as the aldehyde group, represented by the formula –CHO. In this structure, the carbon atom is double-bonded to an oxygen atom and single-bonded to a hydrogen atom …
What are Aldehydes? - BYJU'S
The structures of naturally occurring aldehyde and ketone are given below. General Properties of Aldehydes. 1. Physical State. Except formaldehyde which is gas at room temperature, most of the common aldehydes and ketones are liquid at ordinary temperature.
Characteristics of aldehyde | Britannica
aldehyde, Any of a class of organic compounds that contain a carbonyl group (―C=O; see functional group) in which the carbon atom is bonded to at least one hydrogen atom. Many have characteristic odours.
18.14: Aldehydes and Ketones - Chemistry LibreTexts
Jul 26, 2022 · Identify the general structure for an aldehyde and a ketone. Use common names to name aldehydes and ketones. Use the IUPAC system to name aldehydes and ketones.
Aldehyde Definition, Functional Group & Properties - Chemistry Dictionary
Oct 30, 2017 · An aldehyde (RCHO) is a carbonyl compound where carbonyl group is bonded to one carbon (or alkyl group) and one hydrogen atom. The aldehydes are named from the name of corresponding longest carbon chain of aliphatic hydrocarbon containing the aldehyde group by replacing the ending -e with -al.
Aldehyde - Organic, Reactivity, Carboxylic Acids | Britannica
Mar 31, 2025 · Aldehyde - Organic, Reactivity, Carboxylic Acids: The only structural difference between hydrocarbons and aldehydes is the presence in the latter of the carbonyl group, and it is this group that is responsible for the differences in properties, both physical and chemical.
4.8: Aldehydes and Ketones - Chemistry LibreTexts
Jul 26, 2022 · The carbon atom of this group has two remaining bonds that may be occupied by hydrogen, alkyl or aryl substituents. If at least one of these substituents is hydrogen, the compound is an aldehyde. If neither is hydrogen, the compound is a ketone. When writing the condensed formulas for aldehydes and ketones, it is important to note that the ...