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Contents & notes: what this topic covers
Under Solubility, the JAMB Chemistry syllabus expects you to study:
- 6. Solubility
- (a) Unsaturated, saturated and supersaturated solutions. Solubility curves and simple deductions from them, (solubility defined in terms of mole per dm3) and simple calculations
- (b) Solvents for fats, oil, perspiration and (v paints and the use of such solvents for the removal of stains
- (c) True and false solutions (Suspensions (vi and colloids): Properties and examples (vi Harmattan haze and water paints as examples of suspensions, fog, milk, blood, aerosol spray, emulsion (vi paints and rubber solution as examples of colloids
Study notes & guidance
Study Solubility 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 Solubility, you should be able to:
- (i) distinguish between the different types of solutions; (ii) interpret solubility curves; (iii) calculate the amount of solute that can dissolve in a given amount of solvent at a given temperature; (iv) deduce that solubility is temperature- dependent;
- Relate nature of solvents to their uses;
- Differentiate among true solutions, suspensions and colloids;
- Compare the properties of a ‘true’ solution and a ‘false’ solution; and
- Provide typical examples of suspensions and colloids.
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.
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.