TNSB - 6 - Science :: Chemistry in Daily Life
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[Contributor - Preethi Saravanakumar]
Objective: To teach the students how we produce many things which are very useful in our daily life, based on the chemical properties of naturally available raw materials.
Subtopics to be covered:
- Cement and its uses
- Plastics (Types and uses of plastics)
- Glass and its uses
- Soap -preparation and uses
- Fibres (Types of fibres and their uses)
Learning Outcome:
- Students understand the use of Chemistry in daily life.
[Contributor - Kripa S]
http://www.textbooksonline.tn.nic.in/Books/Std06/Std06-III-MSSS-TM-2.pdf#page=25 (Tamil Medium)
http://www.textbooksonline.tn.nic.in/Books/Std06/Std06-III-MSSS-EM-2.pdf#page=25 (English Medium)
[Contributor - Kripa S]
http://ricerca.usb.it/uploads/pics/muro_mattoni.gif (cement)
http://cdn.xl.thumbs.canstockphoto.com/canstock6845097.jpg (plastic)
https://image.slidesharecdn.com/syntheticfibres-141228032752-conversion-gate02/95/synthetic-fibres-3-638.jpg?cb=1419758947 (Types of synthetic fibres)
https://image.slidesharecdn.com/fibreandhairanalysis-140824061341-phpapp01/95/fibre-and-hair-analysis-5-638.jpg?cb=1408860884 (natural fibres)
[Contributor - Vikas Kumar]
1. Ask some of the students to gather a handful/spoonful of cement from any site. In the class, ask them to dissolve the cement in any container (cup, beaker). Stir the mixture with the spoon and leave it for one day (The cement will ossify). Show the result the activity to students and ask them to guess various uses of cement based on what they saw.
2. Plastic have various uses and can be classified into types – thermostats (non reshapable) and thermoplastic (reshapable). Ask the students to identify:
- Various plastics seen in their environment. Make a list of them
- Guess on what would happen if we heat it.
- Identify which is thermostat and which is thermoplastic.
[Contributor - Gayathri Arun]
https://drive.google.com/open?id=0BzNF2YyqQxJ-U3B5Y0E2RDNVa0k (Answer Key 2)
[Contributor - Ramkee]
Term | Transliterated Term | Translated Term |
Thermo Plastics | தெர்மோ பிளாஸ்டிக்ஸ் | வெப்ப நெகிழிகள் |
contagious | கண்டெஜீயெஸ் | தொற்றக்கூடிய |
Non Inflammable | நான் இன்ப்பிளேமப்பில் | எளிதில் எரியாத |
Degrade | டிகிரேட் | வெப்பநிலைப் பிறழ்ச்சி, தரத்தைக் குறை |
Viscous Liquid | விஸ்கஸ் லிக்விட் | பிசுபிசுப்பான திரவம் |
Molten Glass | மோல்டன் க்ளாஸ் | உருக்கிய கண்ணாடி |
Brittle | ப்ரிட்டில் | நொறுங்கத்தக்க |
Annealing | அன்னீலிங் | பதனாற்றுதல் |
Fibres | பைபர்ஸ் | இழை |
Synthetic | சிந்தெடிக் | செயற்கையான |
Fur | பற் | மென்மயிர் |
Cellulose | செல்லுலோஸ் | மரக்கூழ் |
[Contributor - Gayathri Arun]
https://drive.google.com/open?id=0B4m07xnDF8JpZkhjUFV1TFMxeTg (Worksheet 1)
https://drive.google.com/open?id=0BzNF2YyqQxJ-R29RcUhsRllLZ0k (Worksheet 2)





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