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Chemical reactions and their types (view source)
Revision as of 09:59, 25 January 2018
, 09:59, 25 January 2018→Useful websites
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__FORCETOC__
__FORCETOC__
= Textbook =
= Textbook =
Karnataka state textbook [http://ktbs.kar.nic.in/new/website%20textbooks/class8/8th-english-science-1.pdf Science for class 8:] Chapter 11-Chemical reactions and their types
= Additional information =
= Additional information =
==Useful websites==
==Useful websites==
[https://en.wikipedia.org/wiki/Redox Redox reaction]<br>
[http://www.chemguide.co.uk/inorganic/redox/definitions.html Oxidation and Redox reaction]
[http://www.wintonwoods.org/userfiles/557/EXTENDED%20LEARNING/Grade%209%20Science.pdf Physical and Chemical changes]- A review worksheet on physical and chemical changes
==Reference Books==
==Reference Books==
* '''Materials/ Resources needed:'''Copper sulphate solution, Iron nails,Spatula, Glass rod, Cotton thread etc.
* '''Materials/ Resources needed:'''Copper sulphate solution, Iron nails,Spatula, Glass rod, Cotton thread etc.
* '''Prerequisites/Instructions, if any:'''
* '''Prerequisites/Instructions, if any:'''
# Please Wear apron in laboratory.
# Please use Forceps in handling Iron nails.
# Please use glass rod to stir the solution.
* '''Multimedia resources'''
* '''Multimedia resources'''
* '''Website interactives/ links/ simulations'''
* '''Website interactives/ links/ simulations'''
* '''Process (How to do the activity)'''
* '''Process (How to do the activity):'''
* '''Developmental Questions (What discussion questions)'''
1. Take one beaker (usually 100-150ml is sufficient), rinse it properly.<br>
* '''Evaluation (Questions for assessment of the child)'''
2. Take 100ml of Copper sulphate solution in the beaker.<br>
'''Preparation of Copper sulphate Solution:''' Mix the Copper sulphate powder in water in the ratio of 1:10 to prepare the Copper sulphate solution.
3. Take an fresh Iron Nail and tie it with a thread(u can use forcep instead of thread for easy handling). Leave it into the Copper sulphate solution.<br>
4. Keep this for about 15-20 minutes.<br>
5. After 20 minutes we see the deposition of Copper over iron nail.<br>
The process of losing electrons is called "Oxidation" and the process of gaining electrons is called "Reduction". These two processes taking place simultaneously hence we call it as [https://en.wikipedia.org/wiki/Redox '''“Redox reaction”''']. Here, Iron loses electrons whereas Copper gains electrons. So, Iron is more reactive than Copper hence, it displaces Copper from Copper sulphate solution.
''' CuSO4 + Fe → FeSO4 + Cu '''
* '''Developmental Questions (What discussion questions)'''<br>
1. What is the colour of Copper sulphate crystal?<br>
2. Is Copper sulphate crystals dissolve in water ?
* '''Evaluation (Questions for assessment of the child)'''<br>
What is the use of Redox reaction in daily life?
==Concept #==
==Concept #==
===Notes for teachers===
===Notes for teachers===
''These are short notes that the teacher wants to share about the concept, any locally relevant information, specific instructions on what kind of methodology used and common misconceptions/mistakes.''
''These are short notes that the teacher wants to share about the concept, any locally relevant information, specific instructions on what kind of methodology used and common misconceptions/mistakes.''
===Activity No # ===
===Activity No 3 [[salts and solubility]] ===
===Activity No 4 PhET Activity [[Concentration of salts]] ===
===Activity No # ===
= Project Ideas =
= Project Ideas =
