APSB - 8 - Science :: Electric conductivity of liquids

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[Contributor - Aasma Ahmad]

Objective: To teach the students about electric conductivity of liquids and its uses

Subtopics to be covered:

1. Electric conductivity
2. Chemical effect of electric current
3. Electrolytic cell
4. Electroplating

Learning Outcome:

1. Students know that some liquids conduct electricity as some solids do
2. They know when a liquid conducts electricity
3. They know about electrolysis and its use in making cell and electroplating

[Author - Kripa S]

http://scert.telangana.gov.in/sites/default/files/publication/ebooks/8TM_PHY.pdf#page=120 (Telangana Board) (Telugu Medium)

https://drive.google.com/folderview?id=0B0WiysvR2DOlVDVZYnlsNzlVVk0&usp=sharing (AP Board) (Telugu Medium)

http://scert.telangana.gov.in/sites/default/files/publication/ebooks/8EM_PHY.pdf#page=120 (Telangana Board) (English Medium)

http://apscert.gov.in/ebookapp/GeneratePdf (AP Board) (English Medium)

[Author - Kripa S]

http://study.com/cimages/multimages/16/conductionofheatandelectricity.png (uses of conduction)

https://s-media-cache-ak0.pinimg.com/originals/2f/e1/a5/2fe1a5857a71abddf1da114ecbfb6464.jpg (conductivity of distiled water vs with impurities)

https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcTHPn0LtRIHW3Ufozf_4bjMv4leSSMrU-Ix_6caXdFT96Y67Sjr (electricity)

[Author - Kripa S]

1. Arrange 7 paper cups for these 7 liquids: milk, curd, lemon juice, salt water, sugar water, tomato juice, plain water. Use a regular battery, and three small copper wires. Connect one end of one wire to the battery and other end into a cup, one end of the second wire to the battery and other end to the LED bulb; and third wire from the LED bulb to a cup. Check which liquid is a conductor of electricty, which liquid is an insulator. Record your observations.

[Contributor - Jyothi N]

https://drive.google.com/open?id=1TpqupTRJOS7EhuaPV5qnXMqpZRE8N37E

[Contributor - Jyothi N]

https://drive.google.com/open?id=174TpCkRf9Vbq7giq_cY38sFbgGgH989h

[Contributor - Aishwarya Hemadri]

https://drive.google.com/open?id=1Aw_4cAAzEENmVCzGP3xfp4w4lFfm20zo (Question bank - English)

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