Sorting Materials into Groups - Science and Tech NCERT Notes for UPSC
Jan 25, 2023
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Properties of Materials
Properties of Materials
Properties of materials help us to decide which material should be used for making any given object. Some common properties are:
- Appearance
- Having lustre or shiny appearance - Gold, Silver etc.
- Having no lustre or dull appearance - Paper, Chalk etc.
- Hardness
- Hard to compress, scratch - Iron, Stone etc.
- Easy to compress, scratch - Sponge, Wool etc.
- Soluble/Insoluble in water
- Soluble in Water - Sugar, Salt etc.
- Insoluble in Water - Petrol, Saw Dust etc.
- Float/Sink in Water
- Lighter than water (Less Density) thus floats - Dry Leaves, Oil etc.
- Heavier than water (High Density) thus sinks - Stone, Iron etc.
- Transparency
| Material | Can see-through material | Examples |
| Transparent | Yes, Easily | Glass, Water |
| Translucent | Yes, but not clearly | Oiled Paper, Clouds |
| Opaque | No | Wood, Brick |
Also Read : What are lab grown diamonds?
Thus, grouping of materials based on the similarities or differences in their properties can help us to study their characteristics in a more convenient manner.
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