Hardness of non-metallic materials
Pre-Technical Studies · Grade 7 · about 40 minutes
Comparing scratch resistance of paper, rubber, wood, plastics, glass, stone and cement using scraps, not windows.
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- 9 sections of explanation, worked examples and diagrams
- 1 practice task with hints and worked answers
- A quiz that marks itself as you go
- Your progress kept across every subject you take
Other lessons in this sub-strand
- Non-metallic materials in the locality
- Natural non-metallic materials
- Synthetic non-metallic materials
- Sorting natural and synthetic non-metals
- Colour and texture of non-metals
- Hardness of non-metallic materials
- Fire resistance of non-metals
- Wood, stone and cement in buildings
- Plastics, glass, rubber, paper and ceramics in use
- Why non-metallic materials are important