CBSE · Class 8 · Science · Chapter 9

The Amazing World of Solutes, Solvents, and Solutions

Explore solutions, solutes, solvents, solubility, concentration and the factors that affect dissolving.

7 lessons 45 min
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Lessons in this chapter

  1. 1Solutions, Concentration, and SaturationDiscover what makes a mixture a solution and how concentration differs from saturation.
  2. 2Solubility, Temperature, and Solvent ChoiceCompare how solids and gases dissolve, and see how solvent choice supports useful processes.
  3. 3Density and Relative DensityUnderstand density as mass packed into a given volume and learn to compare it using consistent units.
  4. 4Measuring Mass and Liquid VolumeLearn to tare a balance and read a measuring cylinder so your measurements support reliable calculations.
  5. 5Finding the Volume and Density of SolidsChoose a volume method for a solid’s shape, then combine that volume with measured mass to find density.
  6. 6Floating, Sinking, and Changes in DensityUse density comparisons to explain floating and sinking, then investigate how temperature and pressure change density.
  7. 7Summary & PracticeConnect the whole chapter through a recap table, worked reasoning, and mixed practice.
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