Integrated SequencePhysics Chemistry Organic Biology

WikiPremed Resources

Module 12 in the Syllabus
Curriculum

Redox and Electrochemitry Practice
Problem set for Oxidation-Reduction & Electrochemistry in PDF format

Answer Key
Answers and explanations

Oxidation-Reduction Images
Image gallery for study with links to larger teaching JPEGs for classroom presentation

Question Drill for Oxidation-Reduction
Conceptual Vocabulary Self-Test

Basic Terms Crossword Puzzle

Basic Puzzle Solution

Conceptual Vocabulary
RedoxRedox, shorthand for reduction/oxidation reaction, is a term used to describe chemical reactions in which atoms have their oxidation state changed.
Oxidizing agentAn oxidizing agent is a substance that gains electrons in a redox chemical reaction.
Reducing agentA reducing agent is the element or a compound that reduces another species in a redox reaction. It is the electron donor in the redox.
Oxidation numberWithin a molecule or complex, the oxidation number of an element is the charge that it would have if the compound were composed of ions, with assignment of shared electrons based on electronegativity.
Oxidation stateThe oxidation state is an indicator of the degree of oxidation of an atom in a chemical compound. It is usually numerically equal to the oxidation number.
Half-reactionA half reaction is either the oxidation or reduction reaction component of a redox reaction.
Reduction potentialStandard reduction potential is the tendency of a chemical species to acquire electrons and thereby be reduced.
Electron transferElectron transfer is the process by which an electron moves from one atom or molecule to another atom or molecule.
Electron acceptorA terminal electron acceptor is a compound that receives or accepts an electron during cellular respiration or photosynthesis.
Electron donorIn general terms, an electron donor gives up an electron during cellular respiration.
SuperoxideSuperoxide is the free radical product of the one-electron reduction of dioxygen.
PeroxideA peroxide is a compound containing an oxygen-oxygen single bond.
Metathesis reactionMetathesis is a bimolecular process involving the exchange of bonds between the two reacting chemical species, which results in the creation of products with similar or identical bonding affiliations.
DenitrificationDenitrification is the process of reducing nitrate and nitrite, which can be thought of as the opposite of nitrogen fixation
OxidoreductaseAn oxidoreductase is an enzyme that catalyzes the transfer of electrons from one molecule to another.
Inner sphere electron transferInner sphere electron transfer proceeds via a covalent linkage between the two redox partners, the oxidant and the reductant.
Outersphere electron transferOuter sphere electron transfer refers to an electron transfer event that occurs between chemicals that remain separate species before, during, and after the electron transfer event.
Advanced terms that may appear in context in MCAT passages
Osmium tetroxideOsmium tetroxide is the chemical compound with one oxmium atom bonded to four oxygens. It is an important oxidizing agent in the laboratory.
PerchloratePerchlorates are the salts derived from perchloric acid, which are important oxidizing agents for their tendency not to react unless heated.
Redox signalingRedox signaling is the concept that free radicals, reactive oxygen species, and other electronically-activated species act as messengers in biological systems.
Marcus theoryMarcus Theory was originally developed to explain outer sphere electron transfer, but was later extended to inner sphere electron transfer by Noel Hush.



The WikiPremed MCAT Course is a free comprehensive course in the undergraduate level general sciences. Undergraduate level physics, chemistry, organic chemistry and biology are presented by this course as a unified whole within a spiraling curriculum.

Please read our policies on privacy and shipping & returns.  Contact Us.
MCAT is a registered trademark of the Association of American Medical Colleges, which does not endorse the WikiPremed Course.


Creative Commons License
The work of WikiPremed is published under a Creative Commons Attribution Share Alike 3.0 License. There are elements of work here, such as a subset of the images in the archive from WikiPedia, that originated as GNU General Public License works, so take care to follow the unique stipulations of that license in printed reproductions. You can use the resources here for commercial or non-commercial purposes, but please give attribution and a link to the production credits and edit history of the resource. For the works here which began as my individual work, please attribute "John Wetzel, an author at wikipremed.com".