MHSB - 8 - Science :: Carbon and Carbon Compounds
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[Contributor - Aasma Ahmad]
Objective: To teach students about Carbon and its compounds
Subtopics to be covered:
- Carbon
- Properties of Carbon (allotropes, solubility and action with oxygen)
- Carbon dioxide
- Methane
Learning Outcome:
- Students know about the element carbon and its properties
- They know about carbon allotropes like diamond and graphite
- They also know about compounds of carbon – Carbon dioxide and Methane
[Contributor - Kripa S]
http://cart.ebalbharati.in/BalBooks/pdfs/801010012.pdf#page=144 (Marathi Medium)
http://cart.ebalbharati.in/BalBooks/pdfs/803010012.pdf#page=144 (English Medium)
[Contributor - Kripa]
http://static.dnaindia.com/sites/default/files/styles/half/public/2016/08/25/495158-446490-coal1.jpg?itok=0-QbYAhY (coal - natural carbon compound)
http://sciencenordic.com/sites/default/files/imagecache/620x/bio-ccs-700x350.png (carbon dioxide in environment)
http://ib.bioninja.com.au/_Media/carbon-methane_med.jpeg (methane from cattle)
[Contributors - Abantika Ghosh, Rahul Varma]
1) Take a piece of wood, fruit seed or some feathers and heat it.
Observation: Slowly the color changes to black. Upon getting charred they all turn black. Therefore we can conclude that all plant and animal products contain carbon.
2) Hold lighted candle in a gas jar. Observation: The gas jar gets filled with CO2 and extinguishes the burning candle that suggests that C02 neither burns nor does it support burning.
3) How Coal is formed ?
OBJECTIVE: The student will simulate, observe, and explain the conditions under which coal is formed.
CONCEPTS:
• Coal is called a fossil fuel because it was formed from the remains of vegetation that grew as long as 400 million years ago.
• Coal formation is a continuing process.
TIME NEEDED:
Two class periods over four weeks
MATERIALS:
• 2 liter soda bottle with the top cut off)
• fine to medium grain sand
• twigs
• plant leaves
• fine silt or mud
PROCEDURE:
1. Pour water into your container to a depth of four to six inches.
2. Spread about two inches of sand on the bottom.
3. Drop small leaves, sticks and pieces of fern on sand. Let it stand for about two weeks.
Write down what you observe as change in color and decomposition occur every 3rd Day.
4. Gently sift/remove, using a small hard plastic piece, fine silt or mud on top of the plant layer to the depth of two inches.
5. Wait two weeks and drain any water if there is any left. Let it sit and dry for another week or Two
Now you have simulated how Coal /fossil fuel is formed, if you break it gently in layers you might have a simulated fossil imprint from your activity.
Note :: If you line the bottle with plastic wrap then you can lift this dried simulated fossil fully.
Tip :: This is a smelly activity thus you can keep it in a safe place in open and observe as required.
[Contributor - Priya Kashid]
https://drive.google.com/open?id=1yiOIAH-Gyf2baLuMGzjmCmuYxnm932cu
[Contributor - Priya Kashid]
https://drive.google.com/open?id=1-IPkc96EZddopLXWJbyShC2C_Z-b3xft
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