MPBSE - 8 - Science :: Chemical effects of electric current

Go To: MPBSE-Sci-Grade 8

[edit]

Course Content / Subtopic list:

Chemical effect of electric current
Good and bad conductors of electric current with examples
Electroplating

Expected Learning Outcome:

SWBAT-

Explain the chemical effects of electric current
Define electroplating
Distinguish between poor conductors and good conductors with examples

Lesson Plan

Dear Volunteer Teacher,

The lesson plan provides an overall picture of what you need to teach. It is recommended that you follow the objectives and the learning outcomes stated in the lesson plan.

We suggest that that you read the chapter thoroughly and research on how to teach the topic effectively to meet the learning outcomes.

Kindly note, while the lesson plan is a guide to teach, you can also add your own teaching elements to enhance the learning process of the children.

Chemical Effects of Electric Current Lesson Plan - (Lesson Plan - English)

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 of the modified version.

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

Videos

[Author - Kripa S]

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

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

Images

[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)

Activities

[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.