Hydrocarbons

A collection of vocabulary flashcards covering the fundamentals of organic chemistry, including hydrocarbon types, naming conventions, and isomerism.

Organic Chemistry

The branch of chemistry that focuses on the structure, properties, reactions, and synthesis of carbon-containing compounds, encompassing a vast array of substances that include hydrocarbons and their derivatives.

Urea

The first organic compound synthesized artificially in a lab in 1828 by Friedrich Wöhler; it serves as a key nitrogen-containing waste product in mammalian metabolism.

Functional Group

A specific grouping of atoms within a molecule that is responsible for the characteristic chemical reactions of that molecule; they determine the reactivity and properties of various organic compounds.

Hydrocarbon

An organic molecule composed exclusively of carbon and hydrogen atoms; hydrocarbons can be categorized as aliphatic or aromatic compounds.

Saturated Hydrocarbon

Also known as alkanes, these hydrocarbons contain only single covalent bonds between carbon atoms, resulting in the maximum number of hydrogen atoms attached to each carbon; they generally have the formula $C_nH_{2n+2}$.

Alkane

A type of saturated hydrocarbon with only single bonds between carbon atoms, illustrated by the general formula $C_nH_{2n+2}$. Reactions often involve simple substitution; catalysts are generally not needed.

Alkene

An unsaturated hydrocarbon characterized by at least one carbon-carbon double bond, following the general formula $C_nH_{2n}$. Alkenes readily undergo addition reactions which often require catalysts such as metals or acid.

Alkyne

An unsaturated hydrocarbon with at least one carbon-carbon triple bond, defined by the formula $C_nH_{2n-2}$. Alkynes are reactive and participate in various addition reactions, often catalyzed by transition metals.

Cyclic Hydrocarbon

A type of hydrocarbon where the carbon atoms are connected in a closed ring structure; can be saturated (cycloalkanes) or unsaturated (cycloalkenes), which affect their reactivity.

Alkyl Group

A group of atoms derived from an alkane by the removal of one hydrogen atom; it acts as a substituent in larger molecules and influences the compound's properties and reactivity.

Aliphatic Hydrocarbon

Hydrocarbons that consist of straight or branched chains, or cyclic forms, but do not include aromatic hydrocarbons which have a distinct structure involving resonance.

Aromatic Hydrocarbon

Organic compounds that contain conjugated ring systems, notably the benzene ring structure characterized by the formula $C_6H_6$, known for their stability and unique reactions due to resonance.

Benzene

A fundamental aromatic hydrocarbon represented by the formula $C_6H_6$; its structure showcases six carbon atoms in a cyclic arrangement with delocalized electrons, imparting remarkable stability and known for electrophilic substitution reactions.

IUPAC

Acronym for the International Union of Pure and Applied Chemistry, responsible for establishing the standard nomenclature and guidelines for organic compounds utilized by chemists worldwide.

Line Formula

A simplified representation of organic molecules where lines represent bonds and vertices represent carbon atoms; hydrogen atoms are typically omitted for clarity, but implied as needed.

Paraffins

A term associated with alkanes, referring to their lack of reactivity due to their saturated nature, often used to denote hydrocarbons resistant to reaction with strong oxidants or acids.

Phenyl Group

The term given to a benzene ring when it acts as a substituent on another molecule, contributing to the overall properties and reactivity of the larger organic compound.

Ortho

In nomenclature for aromatic compounds, 'ortho-' denotes that two substituents are located on adjacent carbon atoms of a benzene ring.

Meta

'Meta-' is used in aromatic nomenclature to indicate that two substituents are separated by one carbon atom on a benzene ring.

Para

'Para-' is employed to signify that two substituents are positioned opposite each other on a benzene ring.

Isomers

Compounds that share the same molecular formula but differ in the arrangement of atoms, leading to varied chemical and physical properties.

Constitutional Isomers

Isomeric compounds that possess the same molecular formula but differ in the connectivity of their atoms, resulting in distinct compounds.

Stereoisomers

Isomers that have the same molecular formula and connectivity of atoms but differ in their spatial arrangement, affecting their chemical behavior.

Diastereomers

A subset of stereoisomers that are not mirror images of each other, often differing in their physical properties and chemical reactivity.

Enantiomers

Stereoisomers that are non-superimposable mirror images of each other, typically involving chiral centers, resulting in unique interactions in biological systems.

Ethene (Ethylene)

A colorless gas (C2H4) used as a plant hormone to regulate fruit ripening; it is a key feedstock in the production of various plastics; reacts readily through addition reactions.

Ethyne (Acetylene)

The simplest alkyne (C2H2) known for its use as a fuel in welding, capable of producing extremely high temperatures, specifically over $3300 \text{°C}$, in combustion reactions.