Oxidation and Reduction - Redox

Topic 9 of 22 in the JAMB Chemistry syllabus for 2026/2027. Study the contents and notes below, then check yourself against the objectives.

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Contents & notes: what this topic covers

Under Oxidation and Reduction - Redox, the JAMB Chemistry syllabus expects you to study:

  • 9. Oxidation and Reduction - Redox
  • (a) Oxidation in terms of the addition of oxygen
  • (b) Reduction as removal of oxygen with the aid of hydrogen
  • (c) Oxidation and reduction in terms of electron transfer
  • (d) Use of oxidation numbers.
  • Oxidation and reduction treated as change in oxidation number and use of oxidation numbers in balancing simple equations
  • (e) IUPAC nomenclature of inorganic compounds using oxidation number
  • (f) Tests for oxidizing and reducing agents

Study notes & guidance

Study Oxidation and Reduction - Redox using a recommended Chemistry textbook that follows the JAMB syllabus. Work through the contents listed above one by one, make brief notes in your own words, and then practise as many questions on this topic as you can — in Chemistry, understanding and steady practice matter far more than memorising. Use the objectives below as a checklist: if you can do each one confidently, you have mastered this topic.

Objectives — candidates should be able to

After studying Oxidation and Reduction - Redox, you should be able to:

  1. (i) identify the various forms of expressing oxidation and reduction; (ii) classify chemical reactions in terms of oxidation or reduction; (iii) balance redox reaction equations; (iv) deduce the oxidation number of chemical species; (v) compute the number of electron transfer in redox reactions; (vi) identify the name of redox species in a reaction; (vii) distinguish between oxidizing and reducing agents in redox reactions; (viii) apply oxidation number in naming inorganic compounds; and (ix) relate reagents to their oxidizing and reducing abilities.

These objectives are from the official JAMB syllabus. Use them as a checklist — if you can do each one confidently, you have mastered this topic.

Then practise: the fastest way to lock in a topic is to test yourself under time. Go to CBT practice →

Source: official JAMB UTME Chemistry syllabus (IBASS, jamb.gov.ng). Reproduced for study use. Last checked: 17 Sept 2026. Always confirm the current syllabus on the official portal.

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