Materials and Solutions — Syllabus
ICSE · Class 4 · Science
What Materials and Solutions covers in ICSE Class 4 Science: 4 topics, for the 2026-27 session. Part of the ICSE Class 4 Science syllabus.
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Topics in Materials and Solutions
Soluble and Insoluble Substances
- A substance that dissolves in a liquid is called soluble.
- Sugar, salt, and juice powder dissolve in water — they are soluble.
- A substance that does not dissolve in a liquid is called insoluble.
Solute, Solvent, and Solution
- A solution is formed when a solute dissolves in a solvent.
- The substance that dissolves is called the solute (e.g., sugar).
- The liquid in which the solute dissolves is called the solvent (e.g., water).
Separation of Soluble Substances
- Evaporation is used to separate a dissolved solid from a liquid.
- When saltwater is heated, water turns into vapour and salt is left behind.
- This method is used to get salt from seawater in hot countries.
Separation of Insoluble Substances
- Sedimentation: Heavy particles settle down when water is left undisturbed.
- Decantation: Pouring clean water carefully after sedimentation.
- Filtration: Passing mixture through a filter to separate solids from liquid.
Key Concepts
Central concept: Solutions and Separation of Substances
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