Part of the Chemistry JourneyBetaJourneyRedox Reactions: Oxidation and Reduction
Six chapters and 27 lessons, from what oxidation means to electrolysis and batteries. You give every atom its oxidation number on a board that checks the rules, find what is oxidized and what is reduced, and balance half-equations with electrons until the charge matches.
27 lessons27 challenges95 quiz questions
- Beginner friendly
Hands-on interactive lessons
Quizzes to test your knowledge
Free certificate of completion
Syllabus
This section is part of the Chemistry Journey. The full syllabus has more sections: click any preview below to view it on the Journey page.
- Section 1Atomic Structure45 lessons
- Section 2Structure and Bonding49 lessons
- Section 3Stoichiometry41 lessons
Section 4
Oxidation and Reduction
Start sectionStartElectrons on the move: oxidation numbers, oxidizing and reducing agents, half-equations, the reactivity of metals, corrosion, electrolysis and cells.Electron Transfer
5 lessons920Redox Reactions
5 lessons920Half-Equations
5 lessons920Metals and Reactivity
5 lessons920Electrochemistry
4 lessons715Practice Problems
3 lessons3- Section 5Acids and Bases30 lessons
- Section 6Energy, Rates and Equilibrium35 lessons
- Section 7Food Chemistry and the Lab27 lessons
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Build atoms from protons, neutrons and electrons, fill shells and orbitals, and work on a live periodic table. Every Check names the exact mistake.
Build every atom from protons, neutrons and electrons, and read what the numbers on its symbol mean.
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Read, listen, test yourself, ask the AI about your own bench, or look up anything you've already covered. Every lesson meets you where you are.
Everything around you is matter, and all matter is made of tiny particles called atoms.
A substance made of only one kind of atom is an element. There are 118 known elements.
The periodic table lists every element with its symbol: H for hydrogen, O for oxygen.
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Certificate of CompletionChemistry Atomic Structure
Add to LinkedInWhy learn redox with Coddy
- Oxidation numbers you assign yourself. Set each element's number and the board checks it against the rules, from fluorine at -1 to the one element found from the charge.
- Electrons you can count. Name the element oxidized and the one reduced, the oxidizing and reducing agents, and how many electrons pass in the balanced reaction.
- Half-equations balanced by hand. Add electrons, water and H+ until the atoms and the charge both balance, the way an exam asks.
- Exam-style practice. The last chapter is problems shaped like exam questions, each one a challenge you solve on a board.
Frequently asked questions about redox reactions
What does the Oxidation and Reduction section cover?
Oxidation and reduction as electron transfer, oxidation numbers and their rules, oxidizing and reducing agents, half-equations in neutral and acidic solution, the reactivity series and displacement, metals with acids, corrosion, electrolysis and cells, with a final chapter of exam-style practice problems.
What is a redox reaction?
A reaction in which electrons pass from one substance to another. The substance that loses electrons is oxidized and its oxidation number rises; the one that gains them is reduced and its number falls. Zinc in copper sulfate solution is one: each zinc atom gives two electrons to a copper ion.
How do you find an oxidation number?
Start from the fixed values: an element on its own is 0, fluorine is -1, oxygen is usually -2, hydrogen usually +1, group 1 metals +1 and group 2 metals +2. The numbers in a compound add up to zero, and in an ion to its charge, so the last element is found from the sum. In KMnO4, manganese is +7.
How long is the Oxidation and Reduction section?
Six chapters and 27 lessons, each a few minutes long. Finishing it earns a free, verifiable certificate.
What's the fastest way to learn Oxidation and Reduction?
Write Oxidation and Reduction every day. Coddy's course is structured exactly for that: short interactive lessons, immediate exercises, and AI hints when you stall. You spend more time coding Oxidation and Reduction than waiting on long video lectures.
Do I get a Oxidation and Reduction certificate when I finish?
Yes. When you complete the Oxidation and Reduction course you receive a free certificate of completion that you can share on LinkedIn or add to your resume.
