Science & Its Pedagogy
Materials (Classes VI–VIII)
Science & Pedagogy
Paper II
5 topics
What this chapter covers
The 5 topics below make up Materials (Classes VI–VIII) in the CTET syllabus. Open any topic for notes, solved examples and a practice MCQ test.
1Materials of Daily Use & Their Properties
2Separation of Substances
3Metals & Non-Metals
4Acids, Bases & Salts
5Physical & Chemical Changes
Study material & tests
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Concept notes, key points, solved examples and hint-guided practice for every topic.
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🎯 Topic MCQ tests
8 auto-graded CTET-style questions per topic, with full explanations.
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📝 Chapter test
25 fresh mixed-difficulty questions, timed, with solutions.
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Key Concepts — Quick Reference
This chapter
Separation methods — match the method to the mixture
| Handpicking | small visible impurities from a small quantity (stones from rice) |
|---|---|
| Winnowing | lighter & heavier components using wind/air (husk from grain) |
| Sieving | components of different particle SIZE (flour from bran) |
| Filtration | insoluble solid from a liquid (mud from water) |
| Evaporation | recover a DISSOLVED solid from a liquid (salt from sea water) |
| Magnetic separation | magnetic from non-magnetic solids (iron filings from sulphur/sand) |
Acids, bases & the litmus test
| Acid + litmus | turns BLUE litmus RED · sour taste (lemon, vinegar, tamarind) |
|---|---|
| Base + litmus | turns RED litmus BLUE · bitter, soapy (soap, baking soda, lime water) |
| Neutral / salt | no change to litmus (common salt solution, pure water) |
| Neutralisation | acid + base → salt + water (heat released) |