APSB - 7 - Science :: Acids and Bases
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[Author - Anu Nived]
Objective: To teach the students about the difference between Acids, Bases and Salts
Subtopics to be covered:
- Indicators and natural indicators around us
- Neutralisation
- Acid rain
Learning Outcome:
- Students can classify given substances into acids, bases and salts .
- They know about acid rain
- They know about neutralisations that happen in our day to day life.
[Author - Kripa S]
http://scert.telangana.gov.in/sites/default/files/publication/ebooks/7TM_GENSC.pdf#page=24 (Telangana Board) (Telugu Medium)
http://apscert.gov.in/ebookapp/GeneratePdf (AP Board) (Telugu Medium)
http://scert.telangana.gov.in/sites/default/files/publication/ebooks/7EM_GENSC.pdf#page=23 (Telangana Board) (English Medium)
http://apscert.gov.in/ebookapp/GeneratePdf (AP Board) (English Medium)
[Author - Kripa S]
https://www.youtube.com/watch?v=1VVug7tffGo (English - Acids, Bases)
[Author - Anu Nived]
http://healingthebody.ca/wp-content/uploads/2014/09/Fotolia_85808023_Subscription_Monthly_XXL-672x372.jpg (natural indicator - turmeric)
http://aven.amritalearning.com/userfiles/1/image/lichenspaper1.jpg (indicator - lichen)
[Author - Kripa S]
1. Ask students to name some common objects that contain acids, bases and salts.
2. Take a tablespoonful of turmeric powder. Add a little water and make a paste. Make turmeric paper by depositing turmeric paste on blotting paper/filter paper and drying it. Cut thin strips of the yellow paper obtained. Put a drop of soap solution on the strip of turmeric paper. What do you observe?
3.Name some common objects containing neutral components.
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