Home Wikituition Browse all terms Categories
Random term

Browse the dictionary

960 terms · page 13 of 40


A–Z
All A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Electrochemistry & Redox

Electrochemical Series

A list of redox couples arranged in order of their standard electrode potentials.

V
Electrochemistry & Redox

Electrochemistry

The study of the relationship between chemical change and electrical energy.

V
Electrochemistry & Redox

Electrode

A conductor through which electric current enters or leaves an electrolyte.

Dimensionless
Electrochemistry & Redox

Electrolysis

The decomposition of an electrolyte by passing an electric current through it.

C
Electrochemistry & Redox

Electrolyte

A substance that produces mobile ions when dissolved or molten and therefore conducts electricity.

S/m
Electrochemistry & Redox

Electrolytic Cell

An electrochemical cell in which an external electrical supply drives a non-spontaneous redox reaction.

E°cell < 0 V
Electrochemistry & Redox

Electrolytic Conductivity

The ability of an electrolyte solution to conduct electric current, equal to the reciprocal of its resistivity.

κ = (1/R)(l/A) S/m
Electrochemistry & Redox

Electromotive Force

The maximum potential difference a cell can produce, measured when no current is being drawn.

emf = E_cathode − E_anode V
Atomic Structure & Periodicity

Electron

A negatively charged fundamental particle that occupies orbitals around the nucleus and governs chemical bonding.

m_e = 9.109 × 10⁻³¹ kg u
Atomic Structure & Periodicity

Electron Affinity

The energy change when one mole of gaseous atoms each gains an electron to form gaseous negative ions.

X(g) + e⁻ → X⁻(g) kJ/mol
Nuclear & Radiochemistry

Electron Capture

Radioactive decay in which a nucleus absorbs an inner-shell electron, converting a proton into a neutron.

p + e⁻ → n + ν MeV
Atomic Structure & Periodicity

Electron Configuration

The notation describing how an atom's electrons are distributed among its available orbitals.

1s² 2s² 2p⁶ … Dimensionless
Chemical Bonding & Molecular Structure

Electron Domain Geometry

The spatial arrangement of all electron domains — bonding and lone pairs alike — around a central atom.

degrees
Chemical Bonding & Molecular Structure

Electron Sea Model

The model of metallic bonding in which fixed cations are immersed in a mobile cloud of delocalised valence electrons.

Dimensionless
Atomic Structure & Periodicity

Electronegativity

The relative tendency of an atom in a covalent bond to attract the shared pair of electrons towards itself.

ΔEN determines bond polarity Dimensionless
Organic Chemistry

Electrophile

An electron-deficient species that seeks and accepts a pair of electrons from an electron-rich centre.

E⁺ Dimensionless
Organic Chemistry

Electrophilic Addition

A reaction in which an electrophile adds across a carbon–carbon multiple bond, converting a pi bond into two sigma bonds.

C=C + E–Nu → C(E)–C(Nu) Dimensionless
Organic Chemistry

Electrophilic Substitution

A reaction in which an electrophile replaces a hydrogen atom on an aromatic ring.

ArH + E⁺ → ArE + H⁺ Dimensionless
Analytical Chemistry & Spectroscopy

Electrophoresis

A separation technique in which charged species migrate through a medium under an applied electric field.

v = μE cm/s
Electrochemistry & Redox

Electroplating

The deposition of a thin metal coating onto a conducting surface by electrolysis.

g
Electrochemistry & Redox

Electrorefining

The purification of a metal by dissolving it from an impure anode and depositing it in pure form at the cathode.

Dimensionless
Electrochemistry & Redox

Electrowinning

The extraction of a metal from a solution or molten salt of its ore by electrolysis.

kWh/kg
Foundations of Chemistry

Element

A pure substance composed entirely of atoms that share the same atomic number and therefore cannot be split into simpler substances by…

Dimensionless
Chemical Kinetics & Catalysis

Elementary Reaction

A reaction that occurs in a single step exactly as written, with no detectable intermediate.

order = molecularity Dimensionless