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| + | <div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#ffffff; vertical-align:top; text-align:center; padding:5px;"> |
| + | ''[http://karnatakaeducation.org.in/KOER/index.php/ರಾಸಾಯನಿಕ_ಕ್ರಿಯೆಗಳು_ಮತ್ತು_ಅವುಗಳ_ವಿಧಗಳು ಕನ್ನಡದಲ್ಲಿ ನೋಡಿ]''</div> |
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− | |style="width:10%; border:none; border-radius:5px;box-shadow: 5px 5px 5px #888888; background:#f9f9ff; vertical-align:middle; text-align:center; "| | + | | style="width:10%; border:none; border-radius:5px;box-shadow: 5px 5px 5px #888888; background:#f9f9ff; vertical-align:middle; text-align:center; " | |
| [http://www.karnatakaeducation.org.in/KOER/en/index.php/Science:_History The Story of Science] | | [http://www.karnatakaeducation.org.in/KOER/en/index.php/Science:_History The Story of Science] |
− | |style=" width:10%; border:none; border-radius:5px;box-shadow: 5px 5px 5px #888888; background:#f9f9ff; vertical-align:middle; text-align:center; "|[http://www.karnatakaeducation.org.in/KOER/en/index.php/Science:_Philosophy Philosophy of Science] | + | | style=" width:10%; border:none; border-radius:5px;box-shadow: 5px 5px 5px #888888; background:#f9f9ff; vertical-align:middle; text-align:center; " |[http://www.karnatakaeducation.org.in/KOER/en/index.php/Science:_Philosophy Philosophy of Science] |
− | |style=" width:10%; border:none; border-radius:5px;box-shadow: 5px 5px 5px #888888; background:#f9f9ff; vertical-align:middle; text-align:center; "| | + | | style=" width:10%; border:none; border-radius:5px;box-shadow: 5px 5px 5px #888888; background:#f9f9ff; vertical-align:middle; text-align:center; " | |
| [http://www.karnatakaeducation.org.in/KOER/en/index.php/Science:_Pedagogy Teaching of Science] | | [http://www.karnatakaeducation.org.in/KOER/en/index.php/Science:_Pedagogy Teaching of Science] |
− | |style=" width:10%; border:none; border-radius:5px;box-shadow: 5px 5px 5px #888888; background:#f9f9ff; vertical-align:middle; text-align:center; "| | + | | style=" width:10%; border:none; border-radius:5px;box-shadow: 5px 5px 5px #888888; background:#f9f9ff; vertical-align:middle; text-align:center; " | |
| [http://www.karnatakaeducation.org.in/KOER/en/index.php/Science:_Curriculum_and_Syllabus Curriculum and Syllabus] | | [http://www.karnatakaeducation.org.in/KOER/en/index.php/Science:_Curriculum_and_Syllabus Curriculum and Syllabus] |
− | |style=" width:10%; border:none; border-radius:5px;box-shadow: 5px 5px 5px #888888; background:#f9f9ff; vertical-align:middle; text-align:center; "| | + | | style=" width:10%; border:none; border-radius:5px;box-shadow: 5px 5px 5px #888888; background:#f9f9ff; vertical-align:middle; text-align:center; " | |
| [http://www.karnatakaeducation.org.in/KOER/en/index.php/Science:_Topics Topics in School Science] | | [http://www.karnatakaeducation.org.in/KOER/en/index.php/Science:_Topics Topics in School Science] |
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| [http://www.karnatakaeducation.org.in/KOER/en/index.php/Textbooks#Science_-_Textbooks Textbooks] | | [http://www.karnatakaeducation.org.in/KOER/en/index.php/Textbooks#Science_-_Textbooks Textbooks] |
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| [http://www.karnatakaeducation.org.in/KOER/en/index.php/Science:_Question_Papers Question Bank] | | [http://www.karnatakaeducation.org.in/KOER/en/index.php/Science:_Question_Papers Question Bank] |
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| __FORCETOC__ | | __FORCETOC__ |
| = Textbook = | | = Textbook = |
− | To add textbook links, please follow these instructions to:
| + | 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 |
− | ([{{fullurl:{{FULLPAGENAME}}/textbook|action=edit}} Click to create the subpage])
| |
| | | |
| = 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== |
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| #What is the state of Sodium chloride just after the addition of water? | | #What is the state of Sodium chloride just after the addition of water? |
| #what happens to the Sodium chloride in the test tube when the test tube is thoroughly Shaken? | | #what happens to the Sodium chloride in the test tube when the test tube is thoroughly Shaken? |
− | #what changes do you observe when the test tube with Sodium chloride solution is boiled | + | #what changes do you observe when the Sodium chloride solution in the test tube is boiled ? |
| * '''Evaluation (Questions for assessment of the child)''' | | * '''Evaluation (Questions for assessment of the child)''' |
| + | **What is the speciality of a Physical change? |
| * '''Question Corner''' | | * '''Question Corner''' |
| | | |
− | ===Activity No # === | + | ===Activity No 2 === |
| {| style="height:10px; float:right; align:center;" | | {| style="height:10px; float:right; align:center;" |
| |<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;"> | | |<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;"> |
| ''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div> | | ''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div> |
| |} | | |} |
− | * '''Estimated Time''' | + | * '''Estimated Time:'''15-20 minutes |
− | * '''Materials/ Resources needed''' | + | * '''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> |
− | * '''Question Corner'''
| + | '''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 #== |
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| ===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]] === |
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− | ''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
| |
− | |}
| |
− | * '''Estimated Time'''
| |
− | * '''Materials/ Resources needed'''
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− | * '''Prerequisites/Instructions, if any'''
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− | * '''Multimedia resources'''
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− | * '''Website interactives/ links/ simulations'''
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− | * '''Process (How to do the activity)'''
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− | * '''Developmental Questions (What discussion questions)'''
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− | * '''Evaluation (Questions for assessment of the child)'''
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− | * '''Question Corner'''
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− | | |
| | | |
− | ===Activity No # === | + | ===Activity No 4 PhET Activity [[Concentration of salts]] === |
− | {| style="height:10px; float:right; align:center;"
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− | |<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
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− | ''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
| |
− | |}
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− | * '''Estimated Time'''
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− | * '''Materials/ Resources needed'''
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− | * '''Prerequisites/Instructions, if any'''
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− | * '''Multimedia resources'''
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− | * '''Website interactives/ links/ simulations'''
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− | * '''Process (How to do the activity)'''
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− | * '''Developmental Questions (What discussion questions)'''
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− | * '''Evaluation (Questions for assessment of the child)'''
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− | * '''Question Corner'''
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| | | |
| = Project Ideas = | | = Project Ideas = |