JACB - 8 - Science :: Chemical Effects of Electric Current

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[Contributor - Sasmita Kant Maurya]

Dear Volunteer,

Please find below the detailed lesson plan and PPT for this chapter in the language mentioned against the respective link. While the lesson plan will give an overall flow of the lesson, the PPT will include lesson flow as well as the presentations for the class.

https://drive.google.com/open?id=1rstb6fCdhDVJHQIV-U90JiOzWiH5lFPh (Lesson Plan - English)

https://drive.google.com/open?id=13d1ggIKa43C6wO1JPD5apEwr7ZjSo4CY (PPT - Hindi)

You may use the content as it is or download and modify them to suit the students requirements.

If you feel any major modifications or additions are carried out by you in the form of adding any new activity, presentations, videos etc. we request you to send the modified version to submitcontent@evidyloka.org for enabling upload the modified version.

The worksheets of the lesson can be accessed from the worksheet tab.

Kindly rate the lesson plan and share your suggestions and comments on the lesson plan in the comments box below. Your valuble suggestions and comments will help us to improve the content.

Contributor - [Rini Jose]

https://drive.google.com/open?id=0BzNF2YyqQxJ-eEQzaV9pMFhzcVU (JEPC Board) (Hindi Medium)

[Author - Kripa S]

https://www.youtube.com/watch?v=KMKjUqf50PU (what is electricity)

https://www.youtube.com/watch?v=QZPURSF5iH4 (electric conductivity)

[Contributor - Sasmita Kant Maurya]

Lesson Plan version 1.1 video

https://www.youtube.com/watch?v=KMKjUqf50PU (introduction to electricity)

https://www.youtube.com/watch?v=v2JR1FsLQ4M&t=32s

https://www.youtube.com/watch?v=HKEGM2bH-mo

https://www.youtube.com/watch?v=oUhOuW2lcbE&t=8s

https://www.youtube.com/watch?v=9xX46k6-7Oo

https://www.youtube.com/watch?v=XIIx3HTKnnU (Conductivity of distilled water)

https://www.youtube.com/watch?v=y3pGtXyYKDE (Testing electrical conductivity of water)

https://www.youtube.com/watch?v=7cmDK1aluIg&t=312s (heating effect of current)

https://www.youtube.com/watch?v=r8ATBOItKkw (Experiment done on potato)

https://www.youtube.com/watch?v=Rn1CL_pw9ws

https://www.youtube.com/watch?v=Ajlp7soE9FI  (Electrolysis and electro plating)

[Author - Anu Nived]

http://www.ekshiksha.org.in/images_chemical_effects_VIII/figure_2.JPG (chemical effects of electric current example 1)

http://2.bp.blogspot.com/-mdaj8l9qz70/UWKdtYALGlI/AAAAAAAACRA/oI5QH9oZpxE/s1600/CBSE_CLASS_8th_SCIENCE_Chapter_14_CHEMICAL_EFFECTS_OF_ELECTRIC_CURRENT.jpg (purification of copper)

https://s-media-cache-ak0.pinimg.com/originals/d8/22/51/d822512387a817ddcafb66f5bb95235c.jpg (electroplating)

[Author - Kripa S]

1. Take about two teaspoonfuls of distilled water in a clean and dry plastic or rubber cap of a bottle. (You may obtain distilled water from your school science lab. You may also get distilled water from a medical store or a doctor or a nurse). Use the tester to test whether distilled water conducts electricity or not. What do you find? Does distilled water conduct electricity? Now dissolve a pinch of common salt in distilled water. Again test. What do you conclude this time?

2. Test the conduction of electricity through various fruits and vegetables. Display your result in a tabular form.

[Contributor - Sasmita Kant Maurya]

Lesson plan version 1.1 activites

1. Divide the class in two groups- Group A and B. Explain the concept of metals and non-metals by emphasizing upon how tight or loose the atoms are held together. So, the activity is that if each child is an atom, how will they bond if Group A is a metal and Group B is a non-metal.

The objective of this activity is to make the kids understand the difference in atomic or molecular arrangements in metals and non-metals and this will be a recap of what they have learnt earlier. The kids also need to know the names of different metals. Ask the Group A kids (who should be standing very close together as they atoms of a metal) to name out 5 different metals. Similarly, ask Group B kids (who should be standing a little farther apart) to name out 5 different non-metals.

2. Ask the class coordinator or one of the kids to make 10 chits with each chit having a different object written on it:

(i) Rubber sandal

(ii) Iron nail

(iii) Tap water

(iv) Lemon juice

(v) Wooden bat

(vi) Distilled water

(vii) Silver spoon

(viii) Glass rod

(ix) Salt water

(x) Zinc sulphate solution

Distribute the chits among 10 kids. Then ask each of those kids to introduce himself or herself either as a conductor or insulator. To make it more fun, you may ask them to stand in two circles where each circle represents a conductor and an insulator.

3. Ask 2 kids to be cathode and anode. Ask them to identify all the objects in their classroom that can be used to make them (They should point out objects such as the metal book case or the window grill. ) Let the rest of class give their decision on whether the selection is right or not.

[Contributor - Sasmita Kant Maurya]

Lesson Plan version 1.1 PPT

https://drive.google.com/open?id=13d1ggIKa43C6wO1JPD5apEwr7ZjSo4CY

Worksheets [Version 2021]

https://s3.ap-south-1.amazonaws.com/prod.evidyaloka.org/couse_documents/worksheet/JACB/Science/T+3061_ST+6698_V1.pdf (Worksheet 1)

https://s3.ap-south-1.amazonaws.com/prod.evidyaloka.org/couse_documents/worksheet/JACB/Science/T+3061_ST+6699_V1.pdf (Worksheet 2)

Answerkeys [Version 2021]

https://s3.ap-south-1.amazonaws.com/prod.evidyaloka.org/couse_documents/answer_keys/JACB/Science/T+3061_ST+6698_V1.pdf (Answerkey 1)

https://s3.ap-south-1.amazonaws.com/prod.evidyaloka.org/couse_documents/answer_keys/JACB/Science/T+3061_ST+6699_V1.pdf (Answerkey 2)

Worksheets [Version 2021]

https://s3.ap-south-1.amazonaws.com/prod.evidyaloka.org/couse_documents/worksheet/JACB/Science/T+3061_ST+6698_V1.pdf (Worksheet 1)

https://s3.ap-south-1.amazonaws.com/prod.evidyaloka.org/couse_documents/worksheet/JACB/Science/T+3061_ST+6699_V1.pdf (Worksheet 2)