JAMB Chemistry Series key point

March 12, 2026 admin O'level 0

Top 50 JAMB Chemistry Key Points for UTME 2026. Learn important topics, formulas, reactions, and likely questions to help you score high in JAMB.”

 

JAMB Chemistry 2026: 75 Hot Topics, Likely Questions and Key Points for UTME

Are you preparing for JAMB UTME Chemistry 2026 and looking for the most likely questions and hot topics that could appear in the exam?

You are in the right place.

In this guide, you will discover important JAMB Chemistry key points, facts, and concepts that students frequently see in the JAMB Chemistry examination.

These JAMB Chemistry hot topics will help you revise faster and increase your chances of scoring high in UTME Chemistry.

Your journey determines the vehicle you enter. Prepare well today so that success will carry you tomorrow.

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Part 1: Top 50 Important JAMB Chemistry Key Points

Below are important Chemistry facts every JAMB candidate must know.

Atomic Structure and Elements

  1. The most reactive metal known is Francium.
  2. The hardest substance known to man is Diamond.
  3. The lowest oxidation state of Iron is 0.
  4. Quantum numbers describe electrons and not atoms.
  5. Atomic mass is the number of protons and neutrons in an atom.
  6. Atomic number is the number of protons in an atom.
  7. Electrons revolve around the nucleus while protons and neutrons remain inside the nucleus.

Organic Chemistry

  1. Hydrogenation of alkynes produces alkanes.
  2. Consecutive members of the alkane homologous series differ by CH₂.
  3. Benzene is an aromatic hydrocarbon.
  4. The ability of carbon to form long chains is called catenation.
  5. Hydrocarbons are compounds containing carbon and hydrogen only.

Electrochemistry

  1. In electrolysis:
  • Reduction occurs at the cathode
  • Oxidation occurs at the anode

Remember with CRAO
(Cathode = Reduction, Anode = Oxidation)

  1. The electrolyte used in Downs cell is molten NaCl mixed with CaCl₂.

Chemical Reactions

  1. Burning kerosene produces CO₂ and H₂O.
  2. All nitrates are soluble in water.
  3. Most nitrates are unstable when heated.
  4. Hydrogen gas (H₂) is the lightest gas known.

Radioactivity

  1. Radioactivity is the spontaneous disintegration of atomic nuclei.
  2. Radioactive particles include:
  • Alpha particles
  • Beta particles
  • Gamma rays
  1. Alpha particles have the least penetrating power.
  2. Beta particles can be stopped by aluminium foil.
  3. Gamma rays can only be stopped by lead blocks.

Scientists in Chemistry

  1. Dmitri Mendeleev developed the periodic table.
  2. Ernest Rutherford is the father of nuclear science.
  3. Antoine Becquerel discovered radioactivity.
  4. Marie Curie named the phenomenon radioactivity.
  5. R.A. Millikan determined the charge of an electron as −1.60 × 10⁻¹⁹ C.

Physical Chemistry

  1. Pure substances have definite boiling and melting points.
  2. Viscosity is the resistance to flow of a liquid.
  3. Water boils when vapour pressure equals atmospheric pressure.

Atmospheric Chemistry

  1. The atmosphere contains:
  • 78% Nitrogen
  • 21% Oxygen
  • 1% other gases
  1. Fluorine is the most reactive non-metal.

Additional Important Points

  1. The fourth and fifth periods of the periodic table contain 18 elements each.
  2. Elements in the same group are called congeners.
  3. Uranium, Thorium and Polonium are radioactive elements.
  4. Optically active compounds rotate plane-polarised light.
  5. Cathode ray tubes were the early form of television tubes.
  6. Nuclear energy is produced through nuclear fusion and nuclear fission.
  7. Energy from the sun is produced by nuclear fusion.

👉 Read also:
[INTERNAL LINK: JAMB Chemistry Past Questions and Answers]

Part 2: 25 Additional JAMB Chemistry Key Points

Below are more important topics frequently tested in JAMB Chemistry.

  1. The lithosphere is made of rocks and soil.
  2. Industrial production of HNO₃ uses the Ostwald process.
  3. The most used industrial chemical is H₂SO₄.
  4. NaOH is used in soap production.
  5. Thermite process is used to weld broken metal parts.
  6. Bessemer process is used to produce steel.
  7. Acheson process is used to produce graphite.
  8. Nigerian crude oil is called sweet crude because of its low sulphur content.
  9. Amines have a fishy smell.
  10. Aromatic compounds contain benzene rings.
  11. Aliphatic compounds have open carbon chains.
  12. Methane is called fire damp because it causes explosions in coal mines.
  13. Oxygen is the most abundant element in the earth’s crust.
  14. An oxide that forms acid in water is called an acid anhydride.
  15. Metals ionize by losing electrons.

Likely JAMB Chemistry Question

Question:
What is the most reactive metal known?

A. Sodium
B. Potassium
C. Francium
D. Lithium

Correct Answer:
C. Francium

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